{"id":92764,"date":"2026-08-11T08:32:50","date_gmt":"2026-08-11T00:32:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/92764.html"},"modified":"2026-08-11T08:32:50","modified_gmt":"2026-08-11T00:32:50","slug":"%e5%b0%8f%e7%ba%a2%e7%9a%84%e6%95%b0%e7%bb%84%e6%93%8d%e4%bd%9c%e3%80%90%e7%89%9b%e5%ae%a2tracker-%e6%af%8f%e6%97%a5%e4%b8%80%e9%a2%98%e3%80%91","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/92764.html","title":{"rendered":"\u5c0f\u7ea2\u7684\u6570\u7ec4\u64cd\u4f5c\u3010\u725b\u5ba2tracker &amp; \u6bcf\u65e5\u4e00\u9898\u3011"},"content":{"rendered":"<h2>\u5c0f\u7ea2\u7684\u6570\u7ec4\u64cd\u4f5c<\/h2>\n<p>\u65f6\u95f4\u9650\u5236&#xff1a;1 \u79d2 \u7a7a\u95f4\u9650\u5236&#xff1a;1024 MB<\/p>\n<hr \/>\n<h3>\u7f51\u9875\u94fe\u63a5<\/h3>\n<h3>\u725b\u5ba2tracker<\/h3>\n<p>\u725b\u5ba2tracker &amp; \u6bcf\u65e5\u4e00\u9898&#xff0c;\u5b8c\u6210\u6bcf\u65e5\u6253\u5361&#xff0c;\u5373\u53ef\u83b7\u5f97\u725b\u5e01\u3002\u83b7\u5f97\u76f8\u5e94\u6570\u91cf\u7684\u725b\u5e01&#xff0c;\u80fd\u5728\u3010\u725b\u5e01\u5151\u6362\u4e2d\u5fc3\u3011&#xff0c;\u6362\u53d6\u76f8\u5e94\u5956\u54c1&#xff01;\u52a9\u529b\u6bcf\u65e5\u6709\u9898\u505a&#xff0c;\u4e30\u76c8\u725b\u5e01\u65e5\u76ca\u591a&#xff01; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260811003247-6a7a6daf526d9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u9898\u76ee\u63cf\u8ff0<\/h3>\n<p>\u5c0f\u7ea2\u62ff\u5230\u4e86\u4e00\u4e2a\u957f\u5ea6\u4e3a <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: 0.4306em\"><\/span><span class=\"mord mathnormal\">n<\/span><\/span><\/span><\/span><\/span> \u7684\u6570\u7ec4 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         a<\/p>\n<p>         1<\/p>\n<p>        ,<\/p>\n<p>         a<\/p>\n<p>         2<\/p>\n<p>        ,<\/p>\n<p>        \u2026<\/p>\n<p>        ,<\/p>\n<p>         a<\/p>\n<p>         n<\/p>\n<p>       a_1, a_2, \\\\dots, a_n<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.625em;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: 0.3011em\"><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 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\">a<\/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: 0em;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\">\u2026<\/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\">a<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><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\">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;\u521d\u59cb\u6240\u6709\u5143\u7d20\u90fd\u662f\u9ed1\u8272\u3002\u5979\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u4e24\u79cd\u64cd\u4f5c&#xff0c;\u6bcf\u79cd\u64cd\u4f5c\u6700\u591a\u8fdb\u884c\u4e00\u6b21&#xff1a;<\/p>\n<ul>\n<li>\u9009\u62e9\u4e00\u4e2a\u4e0b\u6807 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff0c;\u82b1\u8d39 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>         \u00d7<\/p>\n<p>         i<\/p>\n<p>        a_i \\\\times i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7333em;vertical-align: -0.15em\"><\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6595em\"><\/span><span class=\"mord mathnormal\">i<\/span><\/span><\/span><\/span><\/span> \u7684\u4ee3\u4ef7&#xff0c;\u5c06 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>        a_i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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><\/span><\/span><\/span> \u548c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>        a_i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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><\/span><\/span><\/span> \u4e4b\u524d\u7684\u6240\u6709\u5143\u7d20\u90fd\u67d3\u6210\u7ea2\u8272&#xff1b;<\/li>\n<li>\u9009\u62e9\u4e00\u4e2a\u4e0b\u6807 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff0c;\u82b1\u8d39 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>         \u00d7<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         \u2212<\/p>\n<p>         i<\/p>\n<p>         &#043;<\/p>\n<p>         1<\/p>\n<p>         )<\/p>\n<p>        a_i \\\\times (n &#8211; i &#043; 1)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7333em;vertical-align: -0.15em\"><\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7429em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u7684\u4ee3\u4ef7&#xff0c;\u5c06 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>        a_i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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><\/span><\/span><\/span> \u548c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>        a_i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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><\/span><\/span><\/span> \u4e4b\u540e\u7684\u6240\u6709\u5143\u7d20\u90fd\u67d3\u6210\u7ea2\u8272\u3002<\/li>\n<\/ul>\n<p>\u5c0f\u7ea2\u5e0c\u671b\u6700\u7ec8\u6570\u7ec4\u4e2d\u4e0d\u5305\u542b\u4efb\u610f\u76f8\u540c\u7684\u9ed1\u8272\u5143\u7d20&#xff0c;\u8bf7\u4f60\u5e2e\u5c0f\u7ea2\u6c42\u51fa\u6240\u9700\u8981\u7684\u6700\u5c0f\u4ee3\u4ef7\u3002<\/p>\n<hr \/>\n<h3>\u8f93\u5165\u63cf\u8ff0<\/h3>\n<p>\u7b2c\u4e00\u884c\u8f93\u5165\u4e00\u4e2a\u6574\u6570 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        n<\/p>\n<p>        \u00a0<\/p>\n<p>        (<\/p>\n<p>        1<\/p>\n<p>        \u2264<\/p>\n<p>        n<\/p>\n<p>        \u2264<\/p>\n<p>        3<\/p>\n<p>        \u00d7<\/p>\n<p>         10<\/p>\n<p>         5<\/p>\n<p>        )<\/p>\n<p>       n\\\\ (1 \\\\le n \\\\le 3 \\\\times 10^5)<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\">\u00a0<\/span><span class=\"mopen\">(<\/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: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">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: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">3<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0641em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mord\">0<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u4ee3\u8868\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n<p>\u7b2c\u4e8c\u884c\u8f93\u5165 <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: 0.4306em\"><\/span><span class=\"mord mathnormal\">n<\/span><\/span><\/span><\/span><\/span> \u4e2a\u6574\u6570 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         a<\/p>\n<p>         1<\/p>\n<p>        ,<\/p>\n<p>         a<\/p>\n<p>         2<\/p>\n<p>        ,<\/p>\n<p>        \u2026<\/p>\n<p>        ,<\/p>\n<p>         a<\/p>\n<p>         n<\/p>\n<p>        \u00a0<\/p>\n<p>        (<\/p>\n<p>        1<\/p>\n<p>        \u2264<\/p>\n<p>         a<\/p>\n<p>         i<\/p>\n<p>        \u2264<\/p>\n<p>         10<\/p>\n<p>         9<\/p>\n<p>        )<\/p>\n<p>       a_1, a_2, \\\\dots, a_n\\\\ (1 \\\\le a_i \\\\le 10^9)<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/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: 0.3011em\"><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 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\">a<\/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: 0em;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\">\u2026<\/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\">a<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><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\">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 class=\"mspace\">\u00a0<\/span><span class=\"mopen\">(<\/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: 0.786em;vertical-align: -0.15em\"><\/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=\"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: 1.0641em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mord\">0<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">9<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u4ee3\u8868\u6570\u7ec4\u7684\u5143\u7d20\u3002<\/p>\n<hr \/>\n<h3>\u8f93\u51fa\u63cf\u8ff0<\/h3>\n<p>\u8f93\u51fa\u4e00\u4e2a\u6574\u6570&#xff0c;\u4ee3\u8868\u5c0f\u7ea2\u6240\u9700\u8981\u7684\u6700\u5c0f\u4ee3\u4ef7\u3002<\/p>\n<hr \/>\n<h3>\u793a\u4f8b<\/h3>\n<h4>\u793a\u4f8b 1<\/h4>\n<p>\u8f93\u5165&#xff1a;<\/p>\n<p>5<br \/>\n1 2 3 2 1<\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>4<\/p>\n<p>\u8bf4\u660e&#xff1a; \u5728\u8fd9\u4e2a\u6837\u4f8b\u4e2d&#xff0c;\u5176\u4e2d\u4e00\u79cd\u5408\u6cd5\u7684\u64cd\u4f5c\u65b9\u6cd5\u662f&#xff1a;\u9009\u62e9\u4e0b\u6807 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        4<\/p>\n<p>       4<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">4<\/span><\/span><\/span><\/span><\/span> \u6267\u884c\u7b2c\u4e8c\u79cd\u64cd\u4f5c&#xff0c;\u82b1\u8d39 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        2<\/p>\n<p>        \u00d7<\/p>\n<p>        2<\/p>\n<p>        &#061;<\/p>\n<p>        4<\/p>\n<p>       2 \\\\times 2 &#061; 4<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">2<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">2<\/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\">4<\/span><\/span><\/span><\/span><\/span> \u7684\u4ee3\u4ef7&#xff0c;\u540e\u4e24\u4e2a\u6570\u5b57\u88ab\u67d3\u7ea2&#xff0c;\u6570\u7ec4\u53d8\u4e3a <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        {<\/p>\n<p>        1<\/p>\n<p>        ,<\/p>\n<p>        2<\/p>\n<p>        ,<\/p>\n<p>        3<\/p>\n<p>        ,<\/p>\n<p>          2<\/p>\n<p>          ,<\/p>\n<p>          1<\/p>\n<p>         }<\/p>\n<p>       \\\\{1,2,3,\\\\color{red}{2,1}\\\\}<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">{<\/span><span class=\"mord\">1<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">2<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">3<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\" style=\"color: red\"><span class=\"mord\" style=\"color: red\">2<\/span><span class=\"mpunct\" style=\"color: red\">,<\/span><span class=\"mspace\" style=\"color: red;margin-right: 0.1667em\"><\/span><span class=\"mord\" style=\"color: red\">1<\/span><\/span><span class=\"mclose\" style=\"color: red\">}<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u6240\u6709\u9ed1\u8272\u5143\u7d20\u4e92\u4e0d\u76f8\u540c\u3002<\/p>\n<hr \/>\n<h3>\u6570\u636e\u8303\u56f4\u4e0e\u63d0\u793a<\/h3>\n<ul>\n<li><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         1<\/p>\n<p>         \u2264<\/p>\n<p>         n<\/p>\n<p>         \u2264<\/p>\n<p>         3<\/p>\n<p>         \u00d7<\/p>\n<p>          10<\/p>\n<p>          5<\/p>\n<p>        1 \\\\le n \\\\le 3 \\\\times 10^5<\/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\">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: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">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: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">3<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8141em\"><\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mord\">0<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<li><span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         1<\/p>\n<p>         \u2264<\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>         \u2264<\/p>\n<p>          10<\/p>\n<p>          9<\/p>\n<p>        1 \\\\le a_i \\\\le 10^9<\/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\">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: 0.786em;vertical-align: -0.15em\"><\/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=\"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: 0.8141em\"><\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mord\">0<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">9<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<li>\u4e24\u79cd\u64cd\u4f5c\u6bcf\u79cd\u6700\u591a\u53ea\u80fd\u8fdb\u884c\u4e00\u6b21&#xff0c;\u4e5f\u53ef\u4ee5\u9009\u62e9\u4e0d\u8fdb\u884c\u67d0\u79cd\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u9898\u601d\u8def<\/h3>\n<p>\u672c\u9898\u8981\u6c42\u901a\u8fc7\u6700\u591a\u4e00\u6b21\u524d\u7f00\u67d3\u8272\u548c\u6700\u591a\u4e00\u6b21\u540e\u7f00\u67d3\u8272&#xff0c;\u4f7f\u5f97\u5269\u4f59\u9ed1\u8272\u5143\u7d20\u4e92\u4e0d\u76f8\u540c&#xff0c;\u6c42\u6700\u5c0f\u603b\u4ee3\u4ef7\u3002\u6838\u5fc3\u5728\u4e8e\u5229\u7528\u53cc\u6307\u9488\u627e\u51fa\u6240\u6709\u53ef\u80fd\u7684\u65e0\u91cd\u590d\u5143\u7d20\u5b50\u6bb5&#xff08;\u5373\u9ed1\u8272\u4fdd\u7559\u6bb5&#xff09;&#xff0c;\u5e76\u9884\u5904\u7406\u524d\u540e\u7f00\u7684\u6700\u5c0f\u64cd\u4f5c\u4ee3\u4ef7&#xff0c;\u679a\u4e3e\u8be5\u6bb5\u5373\u53ef\u5f97\u5230\u5168\u5c40\u6700\u4f18\u89e3\u3002<\/p>\n<h5>1. \u95ee\u9898\u7b49\u4ef7\u8f6c\u5316<\/h5>\n<ul>\n<li>\u6700\u7ec8\u5f62\u6001&#xff1a;\u4e24\u79cd\u64cd\u4f5c\u5404\u6700\u591a\u4e00\u6b21&#xff0c;\u56e0\u6b64\u67d3\u8272\u533a\u57df\u5fc5\u7136\u662f\u4e00\u4e2a\u524d\u7f00\u548c\/\u6216\u4e00\u4e2a\u540e\u7f00&#xff0c;\u4e2d\u95f4\u7559\u4e0b\u4e00\u4e2a\u8fde\u7eed\u7684\u9ed1\u8272\u5b50\u6bb5&#xff08;\u53ef\u80fd\u4e3a\u7a7a&#xff09;\u3002\u8981\u6c42\u9ed1\u8272\u5b50\u6bb5\u5185\u5143\u7d20\u4e92\u4e0d\u76f8\u540c\u3002<\/li>\n<li>\u64cd\u4f5c\u4ee3\u4ef7&#xff1a;\n<ul>\n<li>\u524d\u7f00\u64cd\u4f5c\u9009\u62e9\u4e0b\u6807 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff08;1\u2011based&#xff09;&#xff0c;\u67d3\u7ea2 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>            a<\/p>\n<p>            1<\/p>\n<p>           \u223c<\/p>\n<p>            a<\/p>\n<p>            i<\/p>\n<p>          a_1 \\\\sim a_i<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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: 0.3011em\"><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 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\">\u223c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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><\/span><\/span><\/span>&#xff0c;\u4ee3\u4ef7 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>            a<\/p>\n<p>            i<\/p>\n<p>           \u00d7<\/p>\n<p>           i<\/p>\n<p>          a_i \\\\times i<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7333em;vertical-align: -0.15em\"><\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6595em\"><\/span><span class=\"mord mathnormal\">i<\/span><\/span><\/span><\/span><\/span>\u3002<\/li>\n<li>\u540e\u7f00\u64cd\u4f5c\u9009\u62e9\u4e0b\u6807 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff0c;\u67d3\u7ea2 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>            a<\/p>\n<p>            i<\/p>\n<p>           \u223c<\/p>\n<p>            a<\/p>\n<p>            n<\/p>\n<p>          a_i \\\\sim a_n<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u223c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.5806em;vertical-align: -0.15em\"><\/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: 0.1514em\"><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\">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;\u4ee3\u4ef7 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>            a<\/p>\n<p>            i<\/p>\n<p>           \u00d7<\/p>\n<p>           (<\/p>\n<p>           n<\/p>\n<p>           \u2212<\/p>\n<p>           i<\/p>\n<p>           &#043;<\/p>\n<p>           1<\/p>\n<p>           )<\/p>\n<p>          a_i \\\\times (n-i&#043;1)<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7333em;vertical-align: -0.15em\"><\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7429em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u8986\u76d6\u8303\u56f4\u653e\u5bbd&#xff1a;\u82e5\u60f3\u8986\u76d6\u524d\u7f00 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         [<\/p>\n<p>         1<\/p>\n<p>         ,<\/p>\n<p>         x<\/p>\n<p>         ]<\/p>\n<p>        [1, x]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord\">1<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5b9e\u9645\u4e0a\u53ef\u4ee5\u9009\u62e9\u4efb\u610f <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         i<\/p>\n<p>         \u2265<\/p>\n<p>         x<\/p>\n<p>        i \\\\ge x<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7955em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord mathnormal\">x<\/span><\/span><\/span><\/span><\/span> \u7684\u524d\u7f00\u64cd\u4f5c&#xff0c;\u53ea\u9700\u4ed8\u51fa\u5bf9\u5e94\u7684\u4ee3\u4ef7\u3002\u56e0\u6b64\u8986\u76d6\u524d\u7f00 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         [<\/p>\n<p>         1<\/p>\n<p>         ,<\/p>\n<p>         x<\/p>\n<p>         ]<\/p>\n<p>        [1, x]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord\">1<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u4e3a <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           min<\/p>\n<p>           \u2061<\/p>\n<p>           i<\/p>\n<p>           \u2265<\/p>\n<p>           x<\/p>\n<p>         (<\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>         \u00d7<\/p>\n<p>         i<\/p>\n<p>         )<\/p>\n<p>        \\\\min_{i \\\\ge x} (a_i \\\\times i)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mop\"><span class=\"mop\">min<\/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-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 mathnormal mtight\">i<\/span><span class=\"mrel mtight\">\u2265<\/span><span class=\"mord mathnormal mtight\">x<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2452em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002\u540c\u7406&#xff0c;\u8986\u76d6\u540e\u7f00 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         [<\/p>\n<p>         y<\/p>\n<p>         ,<\/p>\n<p>         n<\/p>\n<p>         ]<\/p>\n<p>        [y, n]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u4e3a <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           min<\/p>\n<p>           \u2061<\/p>\n<p>           i<\/p>\n<p>           \u2264<\/p>\n<p>           y<\/p>\n<p>         (<\/p>\n<p>          a<\/p>\n<p>          i<\/p>\n<p>         \u00d7<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         \u2212<\/p>\n<p>         i<\/p>\n<p>         &#043;<\/p>\n<p>         1<\/p>\n<p>         )<\/p>\n<p>         )<\/p>\n<p>        \\\\min_{i \\\\le y} (a_i \\\\times (n-i&#043;1))<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.0361em;vertical-align: -0.2861em\"><\/span><span class=\"mop\"><span class=\"mop\">min<\/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-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 mathnormal mtight\">i<\/span><span class=\"mrel mtight\">\u2264<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0359em\">y<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2861em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/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=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7429em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">))<\/span><\/span><\/span><\/span><\/span>\u3002<\/li>\n<\/ul>\n<h5>2. \u9884\u5904\u7406\u6700\u5c0f\u4ee3\u4ef7\u6570\u7ec4<\/h5>\n<ul>\n<li>\u6570\u7ec4\u4e0b\u6807\u7edf\u4e00\u8f6c\u6362\u4e3a 0\u2011based&#xff0c;\u4fbf\u4e8e\u5904\u7406\u3002<\/li>\n<li>pre[i]&#xff1a;\u8868\u793a\u8986\u76d6\u524d\u7f00 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         [<\/p>\n<p>         0<\/p>\n<p>         ,<\/p>\n<p>         i<\/p>\n<p>         \u2212<\/p>\n<p>         1<\/p>\n<p>         ]<\/p>\n<p>        [0, i-1]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u3002\u8ba1\u7b97\u65b9\u5f0f&#xff1a;\u5148\u8ba1\u7b97\u6bcf\u4e2a\u4f4d\u7f6e <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> \u4f5c\u4e3a\u524d\u7f00\u64cd\u4f5c\u70b9\u7684\u539f\u59cb\u4ee3\u4ef7 a[i] * (i&#043;1)&#xff0c;\u7136\u540e\u4ece\u53f3\u5411\u5de6\u53d6\u540e\u7f00\u6700\u5c0f\u503c\u3002\u5373 pre[i] &#061; min(\u539f\u59cb\u4ee3\u4ef7[i], pre[i&#043;1])&#xff0c;\u8868\u793a\u4ee5\u4f4d\u7f6e <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> \u4f5c\u4e3a\u5de6\u7aef\u70b9\u7684\u8986\u76d6\u524d\u7f00\u7684\u6700\u5c0f\u4ee3\u4ef7\u3002<\/li>\n<li>suf[i]&#xff1a;\u8868\u793a\u8986\u76d6\u540e\u7f00 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         [<\/p>\n<p>         i<\/p>\n<p>         ,<\/p>\n<p>         n<\/p>\n<p>         \u2212<\/p>\n<p>         1<\/p>\n<p>         ]<\/p>\n<p>        [i, n-1]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u3002\u8ba1\u7b97\u6bcf\u4e2a\u4f4d\u7f6e <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> \u7684\u539f\u59cb\u4ee3\u4ef7 a[i] * (n-i)&#xff0c;\u7136\u540e\u4ece\u5de6\u5411\u53f3\u53d6\u524d\u7f00\u6700\u5c0f\u503c\u3002\u5373 suf[i] &#061; min(suf[i-1], \u539f\u59cb\u4ee3\u4ef7[i])&#xff0c;\u8868\u793a\u4ee5\u4f4d\u7f6e <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> \u4f5c\u4e3a\u53f3\u7aef\u70b9\u7684\u8986\u76d6\u540e\u7f00\u7684\u6700\u5c0f\u4ee3\u4ef7\u3002<\/li>\n<li>\u7279\u6b8a\u60c5\u51b5&#xff1a;\u4e0d\u8fdb\u884c\u524d\u7f00\u64cd\u4f5c\u65f6\u4ee3\u4ef7\u4e3a <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff0c;\u53ef\u4ee4 pre[n] &#061; 0&#xff08;\u8986\u76d6\u7a7a\u524d\u7f00&#xff09;&#xff1b;\u4e0d\u8fdb\u884c\u540e\u7f00\u64cd\u4f5c\u65f6\u4ee3\u4ef7\u4e3a <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>&#xff0c;\u4ee4 suf[-1] &#061; 0&#xff0c;\u5b9e\u73b0\u65f6\u6ce8\u610f\u8fb9\u754c\u5904\u7406\u3002<\/li>\n<\/ul>\n<h5>3. \u6ed1\u52a8\u7a97\u53e3\u679a\u4e3e\u9ed1\u8272\u4fdd\u7559\u6bb5<\/h5>\n<ul>\n<li>\u7ef4\u62a4\u53cc\u6307\u9488 l, i&#xff0c;\u4f7f\u5f97\u7a97\u53e3 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         [<\/p>\n<p>         l<\/p>\n<p>         ,<\/p>\n<p>         i<\/p>\n<p>         ]<\/p>\n<p>        [l, i]<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u5185\u5143\u7d20\u4e92\u4e0d\u76f8\u540c&#xff08;\u7528\u96c6\u5408 st \u5224\u91cd&#xff09;\u3002\u679a\u4e3e\u53f3\u7aef\u70b9 <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> \u4ece <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> \u5230 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         n<\/p>\n<p>         \u2212<\/p>\n<p>         1<\/p>\n<p>        n-1<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span>&#xff1a; <\/p>\n<ul>\n<li>\u82e5 a[i] \u5df2\u5728\u96c6\u5408\u4e2d&#xff0c;\u5219\u4e0d\u65ad\u53f3\u79fb\u5de6\u6307\u9488 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           l<\/p>\n<p>          l<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5e76\u79fb\u9664 a[l]&#xff0c;\u76f4\u5230\u7a97\u53e3\u5185\u4e0d\u518d\u91cd\u590d\u3002<\/li>\n<li>\u5c06 a[i] \u52a0\u5165\u96c6\u5408\u3002<\/li>\n<li>\u6b64\u65f6\u7a97\u53e3 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           [<\/p>\n<p>           l<\/p>\n<p>           ,<\/p>\n<p>           i<\/p>\n<p>           ]<\/p>\n<p>          [l, i]<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u4e3a\u6ee1\u8db3\u6761\u4ef6\u7684\u9ed1\u8272\u4fdd\u7559\u6bb5&#xff0c;\u5de6\u8fb9\u9700\u8986\u76d6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           [<\/p>\n<p>           0<\/p>\n<p>           ,<\/p>\n<p>           l<\/p>\n<p>           \u2212<\/p>\n<p>           1<\/p>\n<p>           ]<\/p>\n<p>          [0, l-1]<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u53f3\u8fb9\u9700\u8986\u76d6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           [<\/p>\n<p>           i<\/p>\n<p>           &#043;<\/p>\n<p>           1<\/p>\n<p>           ,<\/p>\n<p>           n<\/p>\n<p>           \u2212<\/p>\n<p>           1<\/p>\n<p>           ]<\/p>\n<p>          [i&#043;1, n-1]<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8389em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">1<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span>\u3002\u603b\u4ee3\u4ef7\u4e3a pre[l] &#043; suf[i&#043;1]\u3002\u53d6\u6240\u6709\u7a97\u53e3\u7684\u6700\u5c0f\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6ce8\u610f\u7a97\u53e3\u53ef\u4ee5\u4e3a\u7a7a&#xff08;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         l<\/p>\n<p>         &gt;<\/p>\n<p>         i<\/p>\n<p>        l &gt; i<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7335em;vertical-align: -0.0391em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&gt;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6595em\"><\/span><span class=\"mord mathnormal\">i<\/span><\/span><\/span><\/span><\/span>&#xff09;&#xff0c;\u8868\u793a\u5168\u90e8\u67d3\u7ea2&#xff0c;\u6b64\u65f6\u4ee3\u4ef7\u4e3a pre[0] \u6216 suf[n]&#xff0c;\u5b9e\u9645\u5728\u679a\u4e3e\u4e2d\u4f1a\u88ab\u8986\u76d6&#xff08;\u4f8b\u5982\u5f53 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         l<\/p>\n<p>         &#061;<\/p>\n<p>         0<\/p>\n<p>         ,<\/p>\n<p>         i<\/p>\n<p>         &#061;<\/p>\n<p>         \u2212<\/p>\n<p>         1<\/p>\n<p>        l&#061;0, i&#061;-1<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/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: 0.854em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">i<\/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: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span> \u65f6&#xff0c;\u4f46\u53cc\u6307\u9488\u81ea\u7136\u5904\u7406&#xff09;\u3002<\/li>\n<\/ul>\n<h5>4. \u590d\u6742\u5ea6\u5206\u6790<\/h5>\n<ul>\n<li>\u65f6\u95f4\u590d\u6742\u5ea6&#xff1a;\u9884\u5904\u7406 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         O<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         )<\/p>\n<p>        O(n)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">O<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u53cc\u6307\u9488\u6bcf\u4e2a\u5143\u7d20\u6700\u591a\u8fdb\u51fa\u96c6\u5408\u4e00\u6b21&#xff0c;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         O<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         )<\/p>\n<p>        O(n)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">O<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002\u603b <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         O<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         )<\/p>\n<p>        O(n)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">O<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>&#xff0c;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         n<\/p>\n<p>         \u2264<\/p>\n<p>         3<\/p>\n<p>         \u00d7<\/p>\n<p>          10<\/p>\n<p>          5<\/p>\n<p>        n \\\\le 3\\\\times 10^5<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">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: 0.7278em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">3<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8141em\"><\/span><span class=\"mord\">1<\/span><span class=\"mord\"><span class=\"mord\">0<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8141em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">5<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5b8c\u5168\u53ef\u884c\u3002<\/li>\n<li>\u7a7a\u95f4\u590d\u6742\u5ea6&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>         O<\/p>\n<p>         (<\/p>\n<p>         n<\/p>\n<p>         )<\/p>\n<p>        O(n)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">O<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u5b58\u50a8\u6570\u7ec4\u53ca\u8f85\u52a9\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<h4>\u603b\u7ed3<\/h4>\n<p>\u5c06\u95ee\u9898\u62bd\u8c61\u4e3a\u201c\u4e2d\u95f4\u4fdd\u7559\u4e00\u4e2a\u65e0\u91cd\u590d\u5b50\u6bb5&#xff0c;\u4e24\u8fb9\u7528\u6700\u4f18\u524d\u7f00\/\u540e\u7f00\u64cd\u4f5c\u8986\u76d6\u201d&#xff0c;\u901a\u8fc7\u9884\u5904\u7406\u4efb\u610f\u524d\u540e\u7f00\u7684\u6700\u5c0f\u8986\u76d6\u4ee3\u4ef7&#xff0c;\u7ed3\u5408\u6ed1\u52a8\u7a97\u53e3\u679a\u4e3e\u6240\u6709\u5408\u6cd5\u9ed1\u8272\u5b50\u6bb5&#xff0c;\u5373\u53ef\u5728\u7ebf\u6027\u65f6\u95f4\u5185\u6c42\u51fa\u6700\u5c0f\u603b\u4ee3\u4ef7\u3002<\/p>\n<h4>\u4ee3\u7801\u7b80\u8981\u8bf4\u660e<\/h4>\n<li>\u8f93\u5165\u4e0e\u9884\u5904\u7406&#xff1a;\n<ul>\n<li>\u8bfb\u5165\u6570\u7ec4 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           a<\/p>\n<p>          a<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord mathnormal\">a<\/span><\/span><\/span><\/span><\/span>\u3002<\/li>\n<li>\u6784\u5efa pre \u6570\u7ec4&#xff1a;pre[i] &#061; a[i] * (i&#043;1)&#xff0c;\u518d\u4ece <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           n<\/p>\n<p>           \u2212<\/p>\n<p>           1<\/p>\n<p>          n-1<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><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>           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> \u53d6 min&#xff0c;\u4f7f pre[i] \u6210\u4e3a\u8986\u76d6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           [<\/p>\n<p>           0<\/p>\n<p>           ,<\/p>\n<p>           i<\/p>\n<p>           \u2212<\/p>\n<p>           1<\/p>\n<p>           ]<\/p>\n<p>          [0, i-1]<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u3002<\/li>\n<li>\u6784\u5efa suf \u6570\u7ec4&#xff1a;suf[i] &#061; a[i] * (n-i)&#xff0c;\u518d\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>           \u2212<\/p>\n<p>           1<\/p>\n<p>          n-1<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span><\/span> \u53d6 min&#xff0c;\u4f7f suf[i] \u6210\u4e3a\u8986\u76d6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           [<\/p>\n<p>           i<\/p>\n<p>           ,<\/p>\n<p>           n<\/p>\n<p>           \u2212<\/p>\n<p>           1<\/p>\n<p>           ]<\/p>\n<p>          [i, n-1]<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">n<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">1<\/span><span class=\"mclose\">]<\/span><\/span><\/span><\/span><\/span> \u7684\u6700\u5c0f\u4ee3\u4ef7\u3002\u8fb9\u754c suf[n] \u89c6\u4e3a <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>&#xff08;\u4ee3\u7801\u4e2d\u7528 suf[i&#043;1]&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6ed1\u52a8\u7a97\u53e3&#xff1a;\n<ul>\n<li>\u521d\u59cb\u5316\u5de6\u6307\u9488 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           l<\/p>\n<p>           &#061;<\/p>\n<p>           0<\/p>\n<p>          l&#061;0<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/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\">0<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u96c6\u5408 st&#xff0c;\u7b54\u6848 res &#061; INF\u3002<\/li>\n<li>\u904d\u5386\u53f3\u6307\u9488 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\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>&#xff1a;\u82e5 a[i] \u91cd\u590d\u5219\u53f3\u79fb <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>           l<\/p>\n<p>          l<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0197em\">l<\/span><\/span><\/span><\/span><\/span> \u5e76\u5220\u9664 a[l]&#xff1b;\u63d2\u5165 a[i]&#xff1b;\u7528 pre[l] &#043; suf[i&#043;1] \u66f4\u65b0\u7b54\u6848\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u8f93\u51fa&#xff1a;\u8f93\u51fa res\u3002<\/li>\n<h3>\u4ee3\u7801\u5185\u5bb9<\/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;bits\/stdc&#043;&#043;.h&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 macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">endl<\/span> <span class=\"token char\">&#039;\\\\n&#039;<\/span><\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span> ll<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span> ull<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span>ll<span class=\"token operator\">&gt;&gt;<\/span> vvt<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> pair<span class=\"token operator\">&lt;<\/span>ll<span class=\"token punctuation\">,<\/span>ll<span class=\"token operator\">&gt;<\/span> pll<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> ll N<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1e3<\/span><span class=\"token operator\">&#043;<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> ll INF<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1e18<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> ll M<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1e6<\/span><span class=\"token operator\">&#043;<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> ll mod<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1e9<\/span><span class=\"token operator\">&#043;<\/span><span class=\"token number\">7<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    ios<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">sync_with_stdio<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    cin<span class=\"token punctuation\">.<\/span><span class=\"token function\">tie<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> cout<span class=\"token punctuation\">.<\/span><span class=\"token function\">tie<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    ll n<span class=\"token punctuation\">;<\/span><br \/>\n    cin <span class=\"token operator\">&gt;&gt;<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span>ll<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">a<\/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\">auto<\/span> <span class=\"token operator\">&amp;<\/span>x <span class=\"token operator\">:<\/span> a<span class=\"token punctuation\">)<\/span> cin <span class=\"token operator\">&gt;&gt;<\/span> x<span class=\"token punctuation\">;<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span>ll<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">pre<\/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> <span class=\"token function\">suf<\/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>ll 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><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        pre<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        suf<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">&#8211;<\/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\">for<\/span> <span class=\"token punctuation\">(<\/span>ll i <span class=\"token operator\">&#061;<\/span> n <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">)<\/span> pre<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">min<\/span><span class=\"token punctuation\">(<\/span>pre<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> pre<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/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>ll i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/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> suf<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">min<\/span><span class=\"token punctuation\">(<\/span>suf<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> suf<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    set<span class=\"token operator\">&lt;<\/span>ll<span class=\"token operator\">&gt;<\/span> st<span class=\"token punctuation\">;<\/span><br \/>\n    ll res <span class=\"token operator\">&#061;<\/span> INF<span class=\"token punctuation\">;<\/span><br \/>\n    ll l <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>ll 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><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>st<span class=\"token punctuation\">.<\/span><span class=\"token function\">count<\/span><span class=\"token punctuation\">(<\/span>a<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><br \/>\n            st<span class=\"token punctuation\">.<\/span><span class=\"token function\">erase<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">[<\/span>l<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            l<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        st<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        res <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">min<\/span><span class=\"token punctuation\">(<\/span>res<span class=\"token punctuation\">,<\/span> pre<span class=\"token punctuation\">[<\/span>l<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#043;<\/span> suf<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/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    cout <span class=\"token operator\">&lt;&lt;<\/span> res <span class=\"token operator\">&lt;&lt;<\/span> endl<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","protected":false},"excerpt":{"rendered":"<p>\u5c0f\u7ea2\u7684\u6570\u7ec4\u64cd\u4f5c \u65f6\u95f4\u9650\u5236&#xff1a;1 \u79d2 \u7a7a\u95f4\u9650\u5236&#xff1a;1024 MB \u7f51\u9875\u94fe\u63a5<br \/>\n\u725b\u5ba2tracker<br \/>\n\u725b\u5ba2tracker &amp; \u6bcf\u65e5\u4e00\u9898&#xff0c;\u5b8c\u6210\u6bcf\u65e5\u6253\u5361&#xff0c;\u5373\u53ef\u83b7\u5f97\u725b\u5e01\u3002\u83b7\u5f97\u76f8\u5e94\u6570\u91cf\u7684\u725b\u5e01&#xff0c;\u80fd\u5728\u3010\u725b\u5e01\u5151\u6362\u4e2d\u5fc3\u3011&#xff0c;\u6362\u53d6\u76f8\u5e94\u5956\u54c1&#xff01;\u52a9\u529b\u6bcf\u65e5\u6709\u9898\u505a&#xff0c;\u4e30\u76c8\u725b\u5e01\u65e5\u76ca\u591a&#xff01;<br \/>\n\u9898\u76ee\u63cf\u8ff0<br \/>\n\u5c0f\u7ea2\u62ff\u5230\u4e86\u4e00\u4e2a\u957f\u5ea6\u4e3a nnn \u7684\u6570\u7ec4 a1,a2,\u2026,ana_1, a_2, \\\\dots, <\/p>\n","protected":false},"author":2,"featured_media":92763,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10187,55,1813,427],"topic":[],"class_list":["post-92764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-codingplan","tag-c","tag-1813","tag-427"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5c0f\u7ea2\u7684\u6570\u7ec4\u64cd\u4f5c\u3010\u725b\u5ba2tracker &amp; \u6bcf\u65e5\u4e00\u9898\u3011 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/92764.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" 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