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A. The Doors time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A. The Doors time limit per 阅读全文
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可以计算负权边的dijkstra //最小费用流Dijkstra算法 //Dijkstra算法求最小费用流核心代码: //h[MAX_V]:导入势保证所有边均为非负边 O(FElogV) int min_cost_flow(int n, int v, int s, int t, int f) { i 阅读全文
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Description Every time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by wa 阅读全文
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Jzzhu is the president of country A. There are n cities numbered from 1 to n in his country. City 1 is the capital of A. Also there are m roads connec 阅读全文
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Six Degrees of Cowvin Bacon Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6744 Accepted: 3139 Description The cows have been making movie 阅读全文
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Wormholes Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 58636 Accepted: 21921 Description While exploring his many farms, Farmer John has 阅读全文
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Cow Hurdles Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8506 Accepted: 3751 Description Farmer John wants the cows to prepare for the c 阅读全文
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A. Pride time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Pride time limit per test 2 阅读全文