Strongly Connected City （判断是否是强连通图）（菜鸡暴搜版）
题目链接：http://codeforces.com/contest/475/problem/B
Imagine a city with n horizontal streets crossing m vertical streets, forming an (n - 1) × (m - 1) grid. In order to increase the traffic flow, mayor ...
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2019-01-19 21:42:38 ·
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