部分题目分类统计: 网络流: 最大流: 1087 a plug for UNIX 1149 PIGS 1273 drainage ditches 1274 the perfect stall 1325 machine schedule 1459 power network 2239 selecting courses 最小费用最大流: 2195 going home ?2400 supervisor, supervisee 压缩存储的DP 1038 bugs integrated inc 1185 炮兵阵地 2430 lazy cow 最长公共子串(LCS): 1080 human gene functions 1159 palindrome 1458 common subsequence 2192 zipper 凸包 1113 wall 2187 beauty contest

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