https://oi-wiki.org/graph/block-forest/#%E4%BE%8B%E9%A2%98 https://codeforces.com/gym/102512/problem/A https://www.shuizilong.com/house/archives/spoj-9577-dynamic-tree-connectivity/ https://www.shuizi…
https://oi-wiki.org/graph/block-forest/#%E4%BE%8B%E9%A2%98 https://codeforces.com/gym/102512/problem/A https://www.shuizilong.com/house/archives/spoj-9577-dynamic-tree-connectivity/ https://www.shuizi…
讨论
登录后参与讨论
还没有评论，来说第一句吧。