Codeforces Round #599 (Div. 1) B. 0-1 MST 圖論
D. 0-1 MST Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. ...
原文：Codeforces Round #599 (Div. 2) D. 0-1 MST(bfs+set)
Codeforces Round Div. D. MST Description Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. This time he found an old dus ...
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