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Codeforces Alpha Round 20 C Dijkstra? (Codeforces format)
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题目 源地址: http://codeforces.com/problemset/problem/20/C 理解 实际上题目不难,但是我们都...
原文:https://xuanwo.io/2014/11/26/cf-20c/上一篇Codeforces Beta Round 16 C Monitor (Div. 2 Only)下一篇Codeforces Beta Round 18 C Stripe (Div.2 Only)