{"id":85432,"date":"2026-07-27T14:57:16","date_gmt":"2026-07-27T06:57:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/85432.html"},"modified":"2026-07-27T14:57:16","modified_gmt":"2026-07-27T06:57:16","slug":"%e9%a2%98%e8%a7%a3%ef%bc%9a%e6%b4%9b%e8%b0%b7-p2971-usaco10hol-cow-politics-g","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/85432.html","title":{"rendered":"\u9898\u89e3\uff1a\u6d1b\u8c37 P2971 [USACO10HOL] Cow Politics G"},"content":{"rendered":"

\u672c\u6587\u5206\u4eab\u7684\u5fc5\u5237\u9898\u76ee\u662f\u4ece\u84dd\u6865\u4e91\u8bfe\u3001\u6d1b\u8c37\u3001AcWing\u7b49\u77e5\u540d\u5237\u9898\u5e73\u53f0\u7cbe\u5fc3\u6311\u9009\u800c\u6765，\u5e76\u7ed3\u5408\u5404\u5e73\u53f0\u63d0\u4f9b\u7684\u7b97\u6cd5\u6807\u7b7e\u548c\u96be\u5ea6\u7b49\u7ea7\u8fdb\u884c\u4e86\u7cfb\u7edf\u5206\u7c7b\u3002\u9898\u76ee\u6db5\u76d6\u4e86\u4ece\u57fa\u7840\u5230\u8fdb\u9636\u7684\u591a\u79cd\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784，\u65e8\u5728\u4e3a\u4e0d\u540c\u9636\u6bb5\u7684\u7f16\u7a0b\u5b66\u4e60\u8005\u63d0\u4f9b\u4e00\u6761\u6e05\u6670\u3001\u5e73\u7a33\u7684\u5b66\u4e60\u63d0\u5347\u8def\u5f84\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u8ba2\u9605\u6211\u7684\u4e13\u680f：\u7b97\u6cd5\u9898\u89e3：C++\u4e0ePython\u5b9e\u73b0！<\/p>\n

\u9644\u4e0a\u6c47\u603b\u8d34：\u7b97\u6cd5\u7ade\u8d5b\u5907\u8003\u51b2\u523a\u5fc5\u5237\u9898（C++） | \u6c47\u603b<\/p>\n

\n

\u3010\u9898\u76ee\u6765\u6e90\u3011<\/p>\n

\u6d1b\u8c37：P2971 [USACO10HOL] Cow Politics G – \u6d1b\u8c37<\/p>\n

\u3010\u9898\u76ee\u63cf\u8ff0\u3011<\/p>\n

\u519c\u592b\u7ea6\u7ff0\u7684\u5976\u725b\u4f4f\u5728 <\/p>\n

n <\/p>\n

n <\/p>\n

<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span> \u7247\u4e0d\u540c\u7684\u8349\u5730\u4e0a，\u6807\u53f7\u4e3a <\/p>\n

1 <\/p>\n

\u223c <\/p>\n

n <\/p>\n

1\\\\sim n <\/p>\n

<\/span><\/span>1<\/span><\/span>\u223c<\/span><\/span><\/span><\/span>n<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

\u6070\u597d\u6709 <\/p>\n

n <\/p>\n

\u2212 <\/p>\n

1 <\/p>\n

n-1 <\/p>\n

<\/span><\/span>n<\/span><\/span>\u2212<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span> \u6761\u5355\u4f4d\u957f\u5ea6\u7684\u53cc\u5411\u9053\u8def，\u7528\u5404\u79cd\u5404\u6837\u7684\u65b9\u6cd5\u8fde\u63a5\u8fd9\u4e9b\u8349\u5730\u3002\u800c\u4e14\u4ece\u6bcf\u7247\u8349\u5730\u51fa\u53d1\u90fd\u53ef\u4ee5\u62b5\u8fbe\u5176\u4ed6\u6240\u6709\u8349\u5730\u3002\u4e5f\u5c31\u662f\u8bf4，\u8fd9\u4e9b\u8349\u5730\u548c\u9053\u8def\u6784\u6210\u4e86\u4e00\u79cd\u53eb\u505a\u6811\u7684\u56fe\u3002\u8f93\u5165\u5305\u542b\u4e00\u4e2a\u8be6\u7ec6\u7684\u8349\u5730\u7684\u96c6\u5408，\u8be6\u7ec6\u8bf4\u660e\u4e86\u6bcf\u4e2a\u8349\u5730\u7684\u7236\u8282\u70b9 <\/p>\n

p <\/p>\n

i <\/p>\n

p_i <\/p>\n

<\/span><\/span>p<\/span><\/span>i<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002\u6839\u8282\u70b9\u7684 <\/p>\n

p <\/p>\n

i <\/p>\n

= <\/p>\n

0 <\/p>\n

p_i=0 <\/p>\n

<\/span><\/span>p<\/span><\/span>i<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>0<\/span><\/span><\/span><\/span><\/span>, \u8868\u793a\u5b83\u6ca1\u6709\u7236\u8282\u70b9\u3002<\/p>\n

\u56e0\u4e3a\u5976\u725b\u5efa\u7acb\u4e86 <\/p>\n

1 <\/p>\n

\u223c <\/p>\n

k <\/p>\n

1\\\\sim k <\/p>\n

<\/span><\/span>1<\/span><\/span>\u223c<\/span><\/span><\/span><\/span>k<\/span><\/span><\/span><\/span><\/span> \u4e00\u5171 <\/p>\n

k <\/p>\n

k <\/p>\n

<\/span><\/span>k<\/span><\/span><\/span><\/span><\/span> \u4e2a\u653f\u515a\u3002\u6bcf\u53ea\u5976\u725b\u90fd\u8981\u52a0\u5165\u67d0\u4e00\u4e2a\u653f\u515a，\u5176\u4e2d， \u7b2c <\/p>\n

i <\/p>\n

i <\/p>\n

<\/span><\/span>i<\/span><\/span><\/span><\/span><\/span> \u53ea\u5976\u725b\u5c5e\u4e8e\u7b2c <\/p>\n

a <\/p>\n

i <\/p>\n

a_i <\/p>\n

<\/span><\/span>a<\/span><\/span>i<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e2a\u653f\u515a\u3002\u800c\u4e14\u6bcf\u4e2a\u653f\u515a\u81f3\u5c11\u6709\u4e24\u53ea\u5976\u725b\u3002 \u6bcf\u4e2a\u653f\u515a\u90fd\u60f3\u77e5\u9053\u81ea\u5df1\u7684\u201c\u8303\u56f4\u201d\u6709\u591a\u5927\u3002\u5176\u4e2d，\u5b9a\u4e49\u4e00\u4e2a\u653f\u515a\u7684\u8303\u56f4\u662f\u8fd9\u4e2a\u653f\u515a\u79bb\u5f97\u6700\u8fdc\u7684\u4e24\u53ea\u5976\u725b（\u6cbf\u7740\u53cc\u5411\u9053\u8def\u884c\u8d70）\u7684\u8ddd\u79bb\u3002<\/p>\n

\u3010\u8f93\u5165\u3011<\/p>\n

\u7b2c\u4e00\u884c\u4e24\u4e2a\u6574\u6570 <\/p>\n

n <\/p>\n

, <\/p>\n

k <\/p>\n

n,k <\/p>\n

<\/span><\/span>n<\/span>,<\/span><\/span>k<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

\u7b2c <\/p>\n

2 <\/p>\n

\u223c <\/p>\n

n <\/p>\n

+ <\/p>\n

1 <\/p>\n

2\\\\sim n+1 <\/p>\n

<\/span><\/span>2<\/span><\/span>\u223c<\/span><\/span><\/span><\/span>n<\/span><\/span>+<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span> \u884c：\u7b2c <\/p>\n

i <\/p>\n

+ <\/p>\n

1 <\/p>\n

i+1 <\/p>\n

<\/span><\/span>i<\/span><\/span>+<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span> \u884c\u4e24\u4e2a\u6574\u6570 <\/p>\n

a <\/p>\n

i <\/p>\n

, <\/p>\n

p <\/p>\n

i <\/p>\n

a_i,p_i <\/p>\n

<\/span><\/span>a<\/span><\/span>i<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>p<\/span><\/span>i<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

\u3010\u8f93\u51fa\u3011<\/p>\n

\u4e00\u5171 <\/p>\n

K <\/p>\n

K <\/p>\n

<\/span><\/span>K<\/span><\/span><\/span><\/span><\/span> \u884c，\u7b2c <\/p>\n

i <\/p>\n

i <\/p>\n

<\/span><\/span>i<\/span><\/span><\/span><\/span><\/span> \u884c\u4e00\u4e2a\u6574\u6570\u8868\u793a\u7b2c <\/p>\n

i <\/p>\n

i <\/p>\n

<\/span><\/span>i<\/span><\/span><\/span><\/span><\/span> \u4e2a\u653f\u515a\u7684\u8303\u56f4\u3002<\/p>\n

\u3010\u8f93\u5165\u6837\u4f8b\u3011<\/p>\n

6 2
\n1 3
\n2 1
\n1 0
\n2 1
\n2 1
\n1 5 <\/p>\n

\u3010\u8f93\u51fa\u6837\u4f8b\u3011<\/p>\n

3
\n2<\/p>\n

\u3010\u7b97\u6cd5\u6807\u7b7e\u3011<\/p>\n

#\u666e\u53caplus<\/p>\n

\u3010\u4ee3\u7801\u8be6\u89e3\u3011<\/p>\n

#<\/span>include<\/span> <bits\/stdc++.h><\/span><\/span>
\nusing<\/span> namespace<\/span> std;<\/span>
\nconst<\/span> int<\/span> N =<\/span> 200005<\/span>,<\/span> M =<\/span> N *<\/span> 2<\/span>;<\/span>
\nint<\/span> n,<\/span> k,<\/span> root;<\/span> \/\/ n: \u8282\u70b9\u6570，k: \u989c\u8272\u79cd\u7c7b\u6570，root: \u6839\u8282\u70b9<\/span>
\nint<\/span> h[<\/span>N]<\/span>,<\/span> e[<\/span>M]<\/span>,<\/span> ne[<\/span>M]<\/span>,<\/span> idx;<\/span> \/\/ \u90bb\u63a5\u8868\u5b58\u50a8\u6811<\/span>
\nint<\/span> a[<\/span>N]<\/span>,<\/span> p;<\/span> \/\/ a: \u8282\u70b9\u989c\u8272，p: \u7236\u8282\u70b9<\/span>
\nint<\/span> dep[<\/span>N]<\/span>,<\/span> fa[<\/span>N]<\/span>[<\/span>20<\/span>]<\/span>,<\/span> maxx[<\/span>100005<\/span>]<\/span>,<\/span> id[<\/span>100005<\/span>]<\/span>,<\/span> ans[<\/span>100005<\/span>]<\/span>;<\/span> \/\/ dep: \u8282\u70b9\u6df1\u5ea6，fa: \u500d\u589e\u7956\u5148\u6570\u7ec4，maxx: \u6bcf\u79cd\u989c\u8272\u7684\u6700\u5927\u6df1\u5ea6，id: \u6bcf\u79cd\u989c\u8272\u6df1\u5ea6\u6700\u5927\u7684\u8282\u70b9，ans: \u6bcf\u79cd\u989c\u8272\u7684\u7b54\u6848<\/span>
\nqueue<<\/span>int<\/span>><\/span> q;<\/span> \/\/ BFS\u961f\u5217<\/span><\/p>\n

\/\/ \u6dfb\u52a0\u65e0\u5411\u8fb9<\/span>
\nvoid<\/span> add<\/span>(<\/span>int<\/span> a,<\/span> int<\/span> b)<\/span>
\n{<\/span>
\n e[<\/span>idx]<\/span> =<\/span> b,<\/span> ne[<\/span>idx]<\/span> =<\/span> h[<\/span>a]<\/span>,<\/span> h[<\/span>a]<\/span> =<\/span> idx++<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/ BFS\u9884\u5904\u7406\u8282\u70b9\u6df1\u5ea6\u3001\u500d\u589e\u6570\u7ec4，\u5e76\u627e\u5230\u6bcf\u79cd\u989c\u8272\u6df1\u5ea6\u6700\u5927\u7684\u8282\u70b9<\/span>
\nvoid<\/span> bfs<\/span>(<\/span>int<\/span> u)<\/span>
\n{<\/span>
\n memset<\/span>(<\/span>dep,<\/span> 0x3f<\/span>,<\/span> sizeof<\/span>(<\/span>dep)<\/span>)<\/span>;<\/span> \/\/ \u521d\u59cb\u5316\u6df1\u5ea6\u4e3a\u65e0\u7a77\u5927<\/span>
\n dep[<\/span>0<\/span>]<\/span> =<\/span> 0<\/span>,<\/span> dep[<\/span>u]<\/span> =<\/span> 1<\/span>;<\/span> \/\/ \u865a\u62df\u8282\u70b90\u6df1\u5ea6\u4e3a0，\u6839\u8282\u70b9\u6df1\u5ea6\u4e3a1<\/span>
\n q.<\/span>push<\/span>(<\/span>u)<\/span>;<\/span><\/p>\n

while<\/span> (<\/span>!<\/span>q.<\/span>empty<\/span>(<\/span>)<\/span>)<\/span>
\n {<\/span>
\n int<\/span> t =<\/span> q.<\/span>front<\/span>(<\/span>)<\/span>;<\/span>
\n q.<\/span>pop<\/span>(<\/span>)<\/span>;<\/span>
\n \/\/ \u66f4\u65b0\u5f53\u524d\u989c\u8272\u7684\u6700\u5927\u6df1\u5ea6\u548c\u5bf9\u5e94\u7684\u8282\u70b9<\/span>
\n if<\/span> (<\/span>maxx[<\/span>a[<\/span>t]<\/span>]<\/span> <<\/span> dep[<\/span>t]<\/span>)<\/span>
\n {<\/span>
\n maxx[<\/span>a[<\/span>t]<\/span>]<\/span> =<\/span> dep[<\/span>t]<\/span>;<\/span> \/\/ \u66f4\u65b0\u6700\u5927\u6df1\u5ea6<\/span>
\n id[<\/span>a[<\/span>t]<\/span>]<\/span> =<\/span> t;<\/span> \/\/ \u8bb0\u5f55\u6df1\u5ea6\u6700\u5927\u7684\u8282\u70b9<\/span>
\n }<\/span><\/p>\n

for<\/span> (<\/span>int<\/span> i =<\/span> h[<\/span>t]<\/span>;<\/span> i !=<\/span> –<\/span>1<\/span>;<\/span> i =<\/span> ne[<\/span>i]<\/span>)<\/span> \/\/ \u904d\u5386\u5b50\u8282\u70b9<\/span>
\n {<\/span>
\n int<\/span> j =<\/span> e[<\/span>i]<\/span>;<\/span>
\n if<\/span> (<\/span>dep[<\/span>j]<\/span> ><\/span> dep[<\/span>t]<\/span> +<\/span> 1<\/span>)<\/span> \/\/ \u5982\u679cj\u672a\u88ab\u8bbf\u95ee<\/span>
\n {<\/span>
\n dep[<\/span>j]<\/span> =<\/span> dep[<\/span>t]<\/span> +<\/span> 1<\/span>;<\/span> \/\/ \u8ba1\u7b97\u6df1\u5ea6<\/span>
\n q.<\/span>push<\/span>(<\/span>j)<\/span>;<\/span>
\n fa[<\/span>j]<\/span>[<\/span>0<\/span>]<\/span> =<\/span> t;<\/span> \/\/ j\u76842^0\u7956\u5148\u4e3at<\/span>
\n for<\/span> (<\/span>int<\/span> k =<\/span> 1<\/span>;<\/span> k <<\/span> 20<\/span>;<\/span> k++<\/span>)<\/span> \/\/ \u9884\u5904\u7406\u500d\u589e\u6570\u7ec4<\/span>
\n {<\/span>
\n fa[<\/span>j]<\/span>[<\/span>k]<\/span> =<\/span> fa[<\/span>fa[<\/span>j]<\/span>[<\/span>k –<\/span> 1<\/span>]<\/span>]<\/span>[<\/span>k –<\/span> 1<\/span>]<\/span>;<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\/\/ \u6c42\u8282\u70b9x\u548cy\u7684\u6700\u8fd1\u516c\u5171\u7956\u5148<\/span>
\nint<\/span> lca<\/span>(<\/span>int<\/span> x,<\/span> int<\/span> y)<\/span>
\n{<\/span>
\n if<\/span> (<\/span>dep[<\/span>x]<\/span> <<\/span> dep[<\/span>y]<\/span>)<\/span> \/\/ \u4fdd\u8bc1x\u6df1\u5ea6\u8f83\u5927<\/span>
\n swap<\/span>(<\/span>x,<\/span> y)<\/span>;<\/span><\/p>\n

\/\/ \u5c06x\u5411\u4e0a\u8df3，\u4f7fx\u548cy\u6df1\u5ea6\u76f8\u540c<\/span>
\n for<\/span> (<\/span>int<\/span> k =<\/span> 19<\/span>;<\/span> k >=<\/span> 0<\/span>;<\/span> k—<\/span>)<\/span>
\n {<\/span>
\n if<\/span> (<\/span>dep[<\/span>fa[<\/span>x]<\/span>[<\/span>k]<\/span>]<\/span> >=<\/span> dep[<\/span>y]<\/span>)<\/span>
\n x =<\/span> fa[<\/span>x]<\/span>[<\/span>k]<\/span>;<\/span>
\n }<\/span><\/p>\n

if<\/span> (<\/span>x ==<\/span> y)<\/span> \/\/ \u5982\u679cx\u7b49\u4e8ey，\u8bf4\u660ey\u662fx\u7684\u7956\u5148<\/span>
\n return<\/span> x;<\/span><\/p>\n

\/\/ x\u548cy\u540c\u65f6\u5411\u4e0a\u8df3，\u76f4\u5230\u627e\u5230\u6700\u8fd1\u516c\u5171\u7956\u5148\u7684\u4e0b\u4e00\u5c42<\/span>
\n for<\/span> (<\/span>int<\/span> k =<\/span> 19<\/span>;<\/span> k >=<\/span> 0<\/span>;<\/span> k—<\/span>)<\/span>
\n {<\/span>
\n if<\/span> (<\/span>fa[<\/span>x]<\/span>[<\/span>k]<\/span> !=<\/span> fa[<\/span>y]<\/span>[<\/span>k]<\/span>)<\/span>
\n {<\/span>
\n x =<\/span> fa[<\/span>x]<\/span>[<\/span>k]<\/span>;<\/span>
\n y =<\/span> fa[<\/span>y]<\/span>[<\/span>k]<\/span>;<\/span>
\n }<\/span>
\n }<\/span>
\n return<\/span> fa[<\/span>x]<\/span>[<\/span>0<\/span>]<\/span>;<\/span> \/\/ \u8fd4\u56de\u6700\u8fd1\u516c\u5171\u7956\u5148<\/span>
\n}<\/span><\/p>\n

int<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\n cin >><\/span> n >><\/span> k;<\/span> \/\/ \u8f93\u5165\u8282\u70b9\u6570\u548c\u989c\u8272\u79cd\u7c7b\u6570<\/span>
\n memset<\/span>(<\/span>h,<\/span> –<\/span>1<\/span>,<\/span> sizeof<\/span>(<\/span>h)<\/span>)<\/span>;<\/span> \/\/ \u521d\u59cb\u5316\u90bb\u63a5\u8868<\/span><\/p>\n

for<\/span> (<\/span>int<\/span> i =<\/span> 1<\/span>;<\/span> i <=<\/span> n;<\/span> i++<\/span>)<\/span> \/\/ \u8f93\u5165\u6bcf\u4e2a\u8282\u70b9\u7684\u989c\u8272\u548c\u7236\u8282\u70b9<\/span>
\n {<\/span>
\n cin >><\/span> a[<\/span>i]<\/span> >><\/span> p;<\/span>
\n if<\/span> (<\/span>p !=<\/span> 0<\/span>)<\/span> \/\/ \u5982\u679c\u6709\u7236\u8282\u70b9，\u6dfb\u52a0\u8fb9<\/span>
\n add<\/span>(<\/span>i,<\/span> p)<\/span>,<\/span> add<\/span>(<\/span>p,<\/span> i)<\/span>;<\/span>
\n else<\/span> \/\/ \u5426\u5219\u662f\u6839\u8282\u70b9<\/span>
\n root =<\/span> i;<\/span>
\n }<\/span><\/p>\n

bfs<\/span>(<\/span>root)<\/span>;<\/span> \/\/ BFS\u9884\u5904\u7406<\/span><\/p>\n

\/\/ \u8ba1\u7b97\u6bcf\u79cd\u989c\u8272\u7684\u7b54\u6848：\u540c\u989c\u8272\u8282\u70b9\u95f4\u7684\u6700\u5927\u8ddd\u79bb<\/span>
\n for<\/span> (<\/span>int<\/span> i =<\/span> 1<\/span>;<\/span> i <=<\/span> n;<\/span> i++<\/span>)<\/span>
\n {<\/span>
\n int<\/span> p_1 =<\/span> i;<\/span> \/\/ \u5f53\u524d\u8282\u70b9<\/span>
\n int<\/span> p_2 =<\/span> id[<\/span>a[<\/span>i]<\/span>]<\/span>;<\/span> \/\/ \u5f53\u524d\u989c\u8272\u6df1\u5ea6\u6700\u5927\u7684\u8282\u70b9<\/span>
\n int<\/span> l =<\/span> lca<\/span>(<\/span>p_1,<\/span> p_2)<\/span>;<\/span> \/\/ \u6c42\u6700\u8fd1\u516c\u5171\u7956\u5148<\/span>
\n int<\/span> t =<\/span> dep[<\/span>p_1]<\/span> +<\/span> dep[<\/span>p_2]<\/span> –<\/span> 2<\/span> *<\/span> dep[<\/span>l]<\/span>;<\/span> \/\/ \u8ba1\u7b97\u8ddd\u79bb<\/span>
\n ans[<\/span>a[<\/span>i]<\/span>]<\/span> =<\/span> max<\/span>(<\/span>ans[<\/span>a[<\/span>i]<\/span>]<\/span>,<\/span> t)<\/span>;<\/span> \/\/ \u66f4\u65b0\u7b54\u6848<\/span>
\n }<\/span><\/p>\n

for<\/span> (<\/span>int<\/span> i =<\/span> 1<\/span>;<\/span> i <=<\/span> k;<\/span> i++<\/span>)<\/span> \/\/ \u8f93\u51fa\u6bcf\u79cd\u989c\u8272\u7684\u7b54\u6848<\/span>
\n cout <<<\/span> ans[<\/span>i]<\/span> <<<\/span> endl;<\/span><\/p>\n

return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u3010\u8fd0\u884c\u7ed3\u679c\u3011<\/p>\n

6 2
\n1 3
\n2 1
\n1 0
\n2 1
\n2 1
\n1 5
\n3
\n2<\/p>\n","protected":false},"excerpt":{"rendered":"

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\n\u6b22\u8fce\u5927\u5bb6\u8ba2\u9605\u6211\u7684\u4e13\u680f：\u7b97\u6cd5\u9898\u89e3：C\u4e0ePython\u5b9e\u73b0！
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\n\u6d1b\u8c37<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[427],"topic":[],"class_list":["post-85432","post","type-post","status-publish","format-standard","hentry","category-server","tag-427"],"yoast_head":"\n\u9898\u89e3\uff1a\u6d1b\u8c37 P2971 [USACO10HOL] Cow Politics G - \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\/85432.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9898\u89e3\uff1a\u6d1b\u8c37 P2971 [USACO10HOL] Cow Politics G - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u672c\u6587\u5206\u4eab\u7684\u5fc5\u5237\u9898\u76ee\u662f\u4ece\u84dd\u6865\u4e91\u8bfe\u3001\u6d1b\u8c37\u3001AcWing\u7b49\u77e5\u540d\u5237\u9898\u5e73\u53f0\u7cbe\u5fc3\u6311\u9009\u800c\u6765，\u5e76\u7ed3\u5408\u5404\u5e73\u53f0\u63d0\u4f9b\u7684\u7b97\u6cd5\u6807\u7b7e\u548c\u96be\u5ea6\u7b49\u7ea7\u8fdb\u884c\u4e86\u7cfb\u7edf\u5206\u7c7b\u3002\u9898\u76ee\u6db5\u76d6\u4e86\u4ece\u57fa\u7840\u5230\u8fdb\u9636\u7684\u591a\u79cd\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784，\u65e8\u5728\u4e3a\u4e0d\u540c\u9636\u6bb5\u7684\u7f16\u7a0b\u5b66\u4e60\u8005\u63d0\u4f9b\u4e00\u6761\u6e05\u6670\u3001\u5e73\u7a33\u7684\u5b66\u4e60\u63d0\u5347\u8def\u5f84\u3002 \u6b22\u8fce\u5927\u5bb6\u8ba2\u9605\u6211\u7684\u4e13\u680f：\u7b97\u6cd5\u9898\u89e3：C\u4e0ePython\u5b9e\u73b0！ \u9644\u4e0a\u6c47\u603b\u8d34：\u7b97\u6cd5\u7ade\u8d5b\u5907\u8003\u51b2\u523a\u5fc5\u5237\u9898（C） | \u6c47\u603b \u3010\u9898\u76ee\u6765\u6e90\u3011 \u6d1b\u8c37\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/85432.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-27T06:57:16+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/85432.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/85432.html\",\"name\":\"\u9898\u89e3\uff1a\u6d1b\u8c37 P2971 [USACO10HOL] Cow Politics G - 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