{"id":53907,"date":"2025-08-12T18:49:46","date_gmt":"2025-08-12T10:49:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53907.html"},"modified":"2025-08-12T18:49:46","modified_gmt":"2025-08-12T10:49:46","slug":"%e3%80%90bfs-%e6%a0%91%e7%8a%b6%e6%95%b0%e7%bb%84%e3%80%91p9026-ccc-2021-s4-daily-commute%e6%99%ae%e5%8f%8a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53907.html","title":{"rendered":"\u3010BFS \u6811\u72b6\u6570\u7ec4\u3011P9026 [CCC 2021 S4] Daily Commute|\u666e\u53ca+"},"content":{"rendered":"<h2>\u672c\u6587\u6d89\u53ca\u77e5\u8bc6\u70b9<\/h2>\n<p>C&#043;&#043;BFS\u7b97\u6cd5 \u3010C&#043;&#043;\u3011\u6811\u72b6\u6570\u7ec4\u7684\u4f7f\u7528\u3001\u539f\u7406\u3001\u5c01\u88c5\u7c7b\u3001\u6837\u4f8b<\/p>\n<h2>P9026 [CCC 2021 S4] Daily Commute<\/h2>\n<h3>\u9898\u76ee\u63cf\u8ff0<\/h3>\n<p>\u5df2\u77e5\u6709 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>       N<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span> \u4e2a\u5730\u94c1\u7ad9&#xff0c;\u4f60\u5bb6\u5728 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        1<\/p>\n<p>       1<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5b66\u6821\u5728 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>       N<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<p>\u6709 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        W<\/p>\n<p>       W<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">W<\/span><\/span><\/span><\/span><\/span> \u6761\u5355\u5411\u4eba\u884c\u9053\u3002\u7ecf\u8fc7\u9700\u8981\u4e00\u5206\u949f\u3002<\/p>\n<p>\u6b64\u5916\u8fd8\u6709\u4e00\u6761\u73af\u5f62\u5730\u94c1\u7ebf\u8def&#xff0c;\u4f9d\u6b21\u7ecf\u8fc7 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         S<\/p>\n<p>         1<\/p>\n<p>        ,<\/p>\n<p>         S<\/p>\n<p>         2<\/p>\n<p>        ,<\/p>\n<p>        \u22ef<br \/>\n       \u2009<\/p>\n<p>        ,<\/p>\n<p>         S<\/p>\n<p>         N<\/p>\n<p>       S_1,S_2,\\\\cdots,S_N<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3011em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3011em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"minner\">\u22ef<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3283em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>&#xff0c;\u4e14\u4fdd\u8bc1 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         S<\/p>\n<p>         1<\/p>\n<p>        &#061;<\/p>\n<p>        1<\/p>\n<p>       S_1&#061;1<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3011em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span>\u3002\u6bcf\u5929\u6709\u4e14\u4ec5\u6709\u4e00\u8f86\u5730\u94c1\u5728 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        0<\/p>\n<p>       0<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0<\/span><\/span><\/span><\/span><\/span> \u65f6\u523b\u4ece <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         S<\/p>\n<p>         1<\/p>\n<p>       S_1<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3011em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u51fa\u53d1&#xff0c;\u5e76\u4e14\u6070\u597d\u5728\u7b2c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        i<\/p>\n<p>       i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6595em\"><\/span><span class=\"mord mathnormal\">i<\/span><\/span><\/span><\/span><\/span> \u5206\u949f\u5230\u8fbe <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         S<\/p>\n<p>         i<\/p>\n<p>       S_i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<p>\u5728\u63a5\u4e0b\u6765 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        D<\/p>\n<p>       D<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><\/span><\/span><\/span><\/span> \u5929\u4e2d&#xff1a;<\/p>\n<ul>\n<li>\u4ea4\u6362 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>          S<\/p>\n<p>           X<\/p>\n<p>           i<\/p>\n<p>        S_{X_i}<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9334em;vertical-align: -0.2501em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3283em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0785em\">X<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3281em\"><span class=\"\" style=\"top: -2.357em;margin-left: -0.0785em;margin-right: 0.0714em\"><span class=\"pstrut\" style=\"height: 2.5em\"><\/span><span class=\"sizing reset-size3 size1 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.143em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2501em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u548c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          S<\/p>\n<p>           Y<\/p>\n<p>           i<\/p>\n<p>        S_{Y_i}<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9334em;vertical-align: -0.2501em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3283em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0576em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.2222em\">Y<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3281em\"><span class=\"\" style=\"top: -2.357em;margin-left: -0.2222em;margin-right: 0.0714em\"><span class=\"pstrut\" style=\"height: 2.5em\"><\/span><span class=\"sizing reset-size3 size1 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.143em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2501em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002\u6ce8\u610f\u4fee\u6539\u662f\u6c38\u4e45\u7684\u3002<\/li>\n<li>\u67e5\u8be2\u4ece <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         1<\/p>\n<p>        1<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span> \u5230 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         N<\/p>\n<p>        N<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u77ed\u7528\u65f6\u3002\u4f60\u51fa\u53d1\u65f6\u5730\u94c1\u5728 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         1<\/p>\n<p>        1<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span>\u3002<\/li>\n<\/ul>\n<h3>\u8f93\u5165\u683c\u5f0f<\/h3>\n<p>\u7b2c\u4e00\u884c&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>        ,<\/p>\n<p>        W<\/p>\n<p>        ,<\/p>\n<p>        D<\/p>\n<p>       N,W,D<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">W<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<p>\u63a5\u4e0b\u6765 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        W<\/p>\n<p>       W<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">W<\/span><\/span><\/span><\/span><\/span> \u884c&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         A<\/p>\n<p>         i<\/p>\n<p>        ,<\/p>\n<p>         B<\/p>\n<p>         i<\/p>\n<p>       A_i,B_i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">A<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0502em\">B<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0502em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u8868\u793a\u5355\u5411\u4eba\u884c\u9053\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u4e00\u884c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>       N<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span> \u4e2a\u6570&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        S<\/p>\n<p>       S<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<p>\u63a5\u4e0b\u6765 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        D<\/p>\n<p>       D<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><\/span><\/span><\/span><\/span> \u884c&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         X<\/p>\n<p>         i<\/p>\n<p>        ,<\/p>\n<p>         Y<\/p>\n<p>         i<\/p>\n<p>       X_i,Y_i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0785em\">X<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0785em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.2222em\">Y<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.2222em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>&#xff0c;\u4fdd\u8bc1 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        2<\/p>\n<p>        \u2264<\/p>\n<p>         X<\/p>\n<p>         i<\/p>\n<p>        ,<\/p>\n<p>         Y<\/p>\n<p>         i<\/p>\n<p>        \u2264<\/p>\n<p>        N<\/p>\n<p>        ,<\/p>\n<p>         X<\/p>\n<p>         i<\/p>\n<p>        \u2260<\/p>\n<p>         Y<\/p>\n<p>         i<\/p>\n<p>       2\\\\leq X_i,Y_i\\\\leq N,X_i\\\\neq Y_i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7804em;vertical-align: -0.136em\"><\/span><span class=\"mord\">2<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0785em\">X<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0785em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.2222em\">Y<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.2222em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0785em\">X<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0785em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\"><span class=\"mrel\"><span class=\"mord vbox\"><span class=\"thinbox\"><span class=\"rlap\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"inner\"><span class=\"mord\"><span class=\"mrel\">\ue020<\/span><\/span><\/span><span class=\"fix\"><\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">&#061;<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.2222em\">Y<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.2222em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<h3>\u8f93\u51fa\u683c\u5f0f<\/h3>\n<p><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        D<\/p>\n<p>       D<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><\/span><\/span><\/span><\/span> \u884c&#xff0c;\u6bcf\u5929\u7684\u7b54\u6848\u3002<\/p>\n<h3>\u8f93\u5165\u8f93\u51fa\u6837\u4f8b #1<\/h3>\n<h4>\u8f93\u5165 #1<\/h4>\n<p>4 3 3<br \/>\n1 2<br \/>\n3 4<br \/>\n4 1<br \/>\n1 4 3 2<br \/>\n3 4<br \/>\n4 2<br \/>\n3 2<\/p>\n<h4>\u8f93\u51fa #1<\/h4>\n<p>1<br \/>\n2<br \/>\n3<\/p>\n<h3>\u8bf4\u660e\/\u63d0\u793a<\/h3>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         3<\/p>\n<p>         \u2264<\/p>\n<p>         N<\/p>\n<p>         \u2264<\/p>\n<p>         200000<\/p>\n<p>         ,<\/p>\n<p>         0<\/p>\n<p>         \u2264<\/p>\n<p>         W<\/p>\n<p>         \u2264<\/p>\n<p>         200000<\/p>\n<p>         ,<\/p>\n<p>         1<\/p>\n<p>         \u2264<\/p>\n<p>         D<\/p>\n<p>         \u2264<\/p>\n<p>         200000<\/p>\n<p>        3\\\\leq N\\\\leq 200000,0\\\\leq W\\\\leq 200000,1\\\\leq D\\\\leq 200000<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7804em;vertical-align: -0.136em\"><\/span><span class=\"mord\">3<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8193em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8389em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">200000<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">0<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8193em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">W<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8389em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">200000<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">1<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8193em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">200000<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u8bd1\u81ea CCC2021 S4\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\u5e38\u6570\u3002<\/p>\n<h2>[CCC 2021 S4] \u6700\u5c0f\u503c\u6811\u72b6\u6570\u7ec4 BFS<\/h2>\n<p>\u6b65\u884c\u8fb9\u53cd\u5411&#xff0c;\u5229\u7528BFS\u6c42\u7ec8\u70b9\u5230\u5404\u70b9\u7684\u8ddd\u79bbw[i]\u3002treeArr[i]\u8bb0\u5f55\u5230\u5750\u8f66\u5230i\u7ad9&#xff0c;\u518d\u6b65\u884c\u7684\u65f6\u95f4\u3002 b[i] \u8bb0\u5f55S\u7684\u9006\u6392\u5217&#xff0c;\u5373b[s[i]] &#061; i&#xff0c;\u5230x\u7ad9\u7684\u65f6\u95f4\u5c31\u662fb[x]\u3002 treeArr[x] &#061; b[x] &#043; w[x]\u6bcf\u6b21\u4ea4\u6362\u53ea\u66f4\u6539b\u548ctreeArr\u7684\u4e24\u4e2a\u503c\u3002 \u65f6\u95f4\u590d\u6742\u5ea6&#xff1a;O(nlogn) \u4e0d\u80fd\u6700\u5c0f\u6811\u72b6\u6570\u7ec4&#xff0c;\u56e0\u4e3a&#xff1a;\u503c\u53ef\u80fd\u53d8\u5927\u3002 \u8fd9\u6837\u65e0\u6cd5\u66f4\u65b0\u533a\u95f4\u6700\u5c0f\u503c\u3002\u53ef\u4ee5\u7528\u7ebf\u6bb5\u6811\u6216\u6709\u5e8f\u96c6\u5408\u3002<\/p>\n<h2>\u4ee3\u7801<\/h2>\n<h3>\u6838\u5fc3\u4ee3\u7801<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;sstream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;map&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;unordered_map&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;set&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;unordered_set&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;string&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;algorithm&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;queue&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stack&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;iomanip&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;numeric&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;math.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;climits&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;assert.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;cstring&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;list&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;array&gt;<\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;bitset&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nstd<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span> <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> in<span class=\"token punctuation\">,<\/span> pair<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> pr<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nin <span class=\"token operator\">&gt;&gt;<\/span> pr<span class=\"token punctuation\">.<\/span>first <span class=\"token operator\">&gt;&gt;<\/span> pr<span class=\"token punctuation\">.<\/span>second<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> in<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T3<\/span> <span class=\"token operator\">&gt;<\/span><br \/>\nstd<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span> <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> in<span class=\"token punctuation\">,<\/span> tuple<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token punctuation\">,<\/span> T3<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> t<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nin <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">0<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">2<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> in<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T4<\/span> <span class=\"token operator\">&gt;<\/span><br \/>\nstd<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span> <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span>istream<span class=\"token operator\">&amp;<\/span> in<span class=\"token punctuation\">,<\/span> tuple<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token punctuation\">,<\/span> T3<span class=\"token punctuation\">,<\/span> T4<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> t<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nin <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">0<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">2<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">3<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>t<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> in<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">ret<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> ret<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">ReadNotNum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\nT tmp<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cin <span class=\"token operator\">&gt;&gt;<\/span> tmp<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nret<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> cin<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">ret<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> ret<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span> N <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1&#039;000&#039;000<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">COutBuff<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token function\">COutBuff<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nm_p <span class=\"token operator\">&#061;<\/span> puffer<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span>T x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">int<\/span> num<span class=\"token punctuation\">[<\/span><span class=\"token number\">28<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> sp <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">*<\/span>m_p<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;-&#039;<\/span><span class=\"token punctuation\">,<\/span> x <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span>x<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>x<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">*<\/span>m_p<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">48<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><br \/>\nnum<span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#043;&#043;<\/span>sp<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> x <span class=\"token operator\">\/&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>sp<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">*<\/span>m_p<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;<\/span> num<span class=\"token punctuation\">[<\/span>sp<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">48<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">AuotToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">writestr<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> sz<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">strcpy<\/span><span class=\"token punctuation\">(<\/span>m_p<span class=\"token punctuation\">,<\/span> sz<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nm_p <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token function\">strlen<\/span><span class=\"token punctuation\">(<\/span>sz<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">AuotToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> ch<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span>m_p<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;<\/span> ch<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">AuotToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">ToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">fwrite<\/span><span class=\"token punctuation\">(<\/span>puffer<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> m_p <span class=\"token operator\">&#8211;<\/span> puffer<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">stdout<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nm_p <span class=\"token operator\">&#061;<\/span> puffer<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token operator\">~<\/span><span class=\"token function\">COutBuff<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">ToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">AuotToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>m_p <span class=\"token operator\">&#8211;<\/span> puffer <span class=\"token operator\">&gt;<\/span> N <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">ToFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">char<\/span>  puffer<span class=\"token punctuation\">[<\/span>N<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span> m_p<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span> N <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1&#039;000&#039;000<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CInBuff<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token function\">CInBuff<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&lt;<\/span>N<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">&amp;<\/span> ch<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">FileToBuf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\r&#039;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039; &#039;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> S<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token comment\">\/\/\u5ffd\u7565\u7a7a\u683c\u548c\u56de\u8f66<\/span><br \/>\nch <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">*<\/span>S<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&lt;<\/span>N<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">FileToBuf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">x<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">f<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">isdigit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nf <span class=\"token operator\">|&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;-&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">isdigit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nx <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">^<\/span> <span class=\"token number\">48<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nval <span class=\"token operator\">&#061;<\/span> f <span class=\"token operator\">?<\/span> <span class=\"token operator\">&#8211;<\/span>x <span class=\"token operator\">:<\/span> x<span class=\"token punctuation\">;<\/span> S<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5ffd\u7565\u7a7a\u683c\u6362\u884c<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">FileToBuf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span> <span class=\"token function\">x<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">f<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">isdigit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nf <span class=\"token operator\">|&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;-&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">isdigit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nx <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>S<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">^<\/span> <span class=\"token number\">48<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nval <span class=\"token operator\">&#061;<\/span> f <span class=\"token operator\">?<\/span> <span class=\"token operator\">&#8211;<\/span>x <span class=\"token operator\">:<\/span> x<span class=\"token punctuation\">;<\/span> S<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5ffd\u7565\u7a7a\u683c\u6362\u884c<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>pair<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> val<span class=\"token punctuation\">.<\/span>first <span class=\"token operator\">&gt;&gt;<\/span> val<span class=\"token punctuation\">.<\/span>second<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T3<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>tuple<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token punctuation\">,<\/span> T3<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">0<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">2<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T4<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>tuple<span class=\"token operator\">&lt;<\/span>T1<span class=\"token punctuation\">,<\/span> T2<span class=\"token punctuation\">,<\/span> T3<span class=\"token punctuation\">,<\/span> T4<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">0<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">2<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&gt;<\/span> get<span class=\"token operator\">&lt;<\/span><span class=\"token number\">3<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> CInBuff<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> val<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\nval<span class=\"token punctuation\">.<\/span><span class=\"token function\">resize<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> val<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">ret<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> ret<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">&gt;&gt;<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">FileToBuf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> canRead <span class=\"token operator\">&#061;<\/span> m_iWritePos <span class=\"token operator\">&#8211;<\/span> <span class=\"token punctuation\">(<\/span>S <span class=\"token operator\">&#8211;<\/span> buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>canRead <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>m_bFinish<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> canRead<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nbuffer<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> S<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/memcpy\u51fa\u9519<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nm_iWritePos <span class=\"token operator\">&#061;<\/span> canRead<span class=\"token punctuation\">;<\/span><br \/>\nbuffer<span class=\"token punctuation\">[<\/span>m_iWritePos<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nS <span class=\"token operator\">&#061;<\/span> buffer<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> readCnt <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">fread<\/span><span class=\"token punctuation\">(<\/span>buffer <span class=\"token operator\">&#043;<\/span> m_iWritePos<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> N <span class=\"token operator\">&#8211;<\/span> m_iWritePos<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">stdin<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>readCnt <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> m_bFinish <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\nm_iWritePos <span class=\"token operator\">&#043;&#061;<\/span> readCnt<span class=\"token punctuation\">;<\/span><br \/>\nbuffer<span class=\"token punctuation\">[<\/span>m_iWritePos<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nS <span class=\"token operator\">&#061;<\/span> buffer<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">int<\/span> m_iWritePos <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">bool<\/span> m_bFinish <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">char<\/span> buffer<span class=\"token punctuation\">[<\/span>N <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span> S <span class=\"token operator\">&#061;<\/span> buffer<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CBFSDis<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token function\">CBFSDis<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token operator\">&amp;<\/span> vNeiB<span class=\"token punctuation\">,<\/span> vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> start<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nm_vDis<span class=\"token punctuation\">.<\/span><span class=\"token function\">assign<\/span><span class=\"token punctuation\">(<\/span>vNeiB<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> m_iNotMayDis<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nqueue<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> que<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> n <span class=\"token operator\">:<\/span> start<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nm_vDis<span class=\"token punctuation\">[<\/span>n<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nque<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>que<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> cur <span class=\"token operator\">&#061;<\/span> que<span class=\"token punctuation\">.<\/span><span class=\"token function\">front<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nque<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span> next <span class=\"token operator\">:<\/span> vNeiB<span class=\"token punctuation\">[<\/span>cur<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>m_iNotMayDis <span class=\"token operator\">!&#061;<\/span> m_vDis<span class=\"token punctuation\">[<\/span>next<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nm_vDis<span class=\"token punctuation\">[<\/span>next<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> m_vDis<span class=\"token punctuation\">[<\/span>cur<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\nque<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace<\/span><span class=\"token punctuation\">(<\/span>next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> m_iNotMayDis <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1e9<\/span><span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> m_vDis<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Ans<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> N<span class=\"token punctuation\">,<\/span> vector<span class=\"token operator\">&lt;<\/span>pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token operator\">&amp;<\/span> edge<span class=\"token punctuation\">,<\/span> vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> S<span class=\"token punctuation\">,<\/span> vector<span class=\"token operator\">&lt;<\/span>pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token operator\">&amp;<\/span> change<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nS<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token function\">neiBo<\/span><span class=\"token punctuation\">(<\/span>N <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token punctuation\">[<\/span>u<span class=\"token punctuation\">,<\/span> v<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">:<\/span> edge<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nneiBo<span class=\"token punctuation\">[<\/span>v<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span>u<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> dis <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CBFSDis<\/span><span class=\"token punctuation\">(<\/span>neiBo<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> N <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>m_vDis<span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">np<\/span><span class=\"token punctuation\">(<\/span>N <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;&#061;<\/span> N<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nnp<span class=\"token punctuation\">[<\/span>S<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> i<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nmultiset<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> mind<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> Add <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nmind<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">&#043;<\/span> dis<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> Sub <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nmind<span class=\"token punctuation\">.<\/span><span class=\"token function\">erase<\/span><span class=\"token punctuation\">(<\/span>mind<span class=\"token punctuation\">.<\/span><span class=\"token function\">find<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">&#043;<\/span> dis<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;&#061;<\/span> N<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token punctuation\">[<\/span>x<span class=\"token punctuation\">,<\/span> y<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">:<\/span> change<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">[<\/span>x<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Sub<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">[<\/span>y<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">[<\/span>x<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> S<span class=\"token punctuation\">[<\/span>y<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">[<\/span>S<span class=\"token punctuation\">[<\/span>x<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> np<span class=\"token punctuation\">[<\/span>S<span class=\"token punctuation\">[<\/span>y<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">[<\/span>x<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>S<span class=\"token punctuation\">[<\/span>y<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nans<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>mind<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">ifdef<\/span> <span class=\"token expression\">_DEBUG<\/span><\/span><br \/>\n<span class=\"token function\">freopen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;a.in&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;r&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">stdin<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span> <span class=\"token comment\">\/\/ DEBUG<\/span><\/span><br \/>\n<span class=\"token comment\">\/\/ios::sync_with_stdio(0); cin.tie(nullptr);<\/span><br \/>\nCInBuff<span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span> in<span class=\"token punctuation\">;<\/span> COutBuff<span class=\"token operator\">&lt;<\/span><span class=\"token number\">10&#039;000&#039;000<\/span><span class=\"token operator\">&gt;<\/span> ob<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> N<span class=\"token punctuation\">,<\/span> W<span class=\"token punctuation\">,<\/span> D<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> N <span class=\"token operator\">&gt;&gt;<\/span> W <span class=\"token operator\">&gt;&gt;<\/span> D <span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> edge <span class=\"token operator\">&#061;<\/span> Read<span class=\"token operator\">&lt;<\/span>pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>W<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> s <span class=\"token operator\">&#061;<\/span> Read<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>N<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> change <span class=\"token operator\">&#061;<\/span> Read<span class=\"token operator\">&lt;<\/span>pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span><span class=\"token punctuation\">(<\/span>D<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> res <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Solution<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">Ans<\/span><span class=\"token punctuation\">(<\/span>N<span class=\"token punctuation\">,<\/span>edge<span class=\"token punctuation\">,<\/span>s<span class=\"token punctuation\">,<\/span>change<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">ifdef<\/span> <span class=\"token expression\">_DEBUG<\/span><\/span><br \/>\n<span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;N&#061;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> N<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Out<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;,s&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Out<\/span><span class=\"token punctuation\">(<\/span>edge<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;,edge&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">Out<\/span><span class=\"token punctuation\">(<\/span>change<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;,change&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/Out(B, &#034;B&#061;&#034;);<\/span><br \/>\n<span class=\"token comment\">\/\/Out(que, &#034;que&#061;&#034;);<\/span><br \/>\n<span class=\"token comment\">\/\/Out(B, &#034;B&#061;&#034;);<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">endif<\/span> <span class=\"token comment\">\/\/ DEBUG<\/span><\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> i <span class=\"token operator\">:<\/span> res<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> i <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u5355\u5143\u6d4b\u8bd5<\/h3>\n<p><span class=\"token keyword\">int<\/span> N<span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> edge<span class=\"token punctuation\">,<\/span> change<span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> s<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">TEST_METHOD<\/span><span class=\"token punctuation\">(<\/span>TestMethod1<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nN <span class=\"token operator\">&#061;<\/span> <span 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