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cpp ///E include define lson rt 1; if(c 1; if(c cpp ///F ///AC: include define lson rt pii; const int MXN = 1e5 + 5; const int mod = 1000000007; int n 阅读全文
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2018ACM ICPC南京现场赛D题 Country Meow Problem D. Country Meow Input file: standard input Output file: standard output In the 24th century, there is a count 阅读全文
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``` include include include include include include include define fi first define se second using namespace std; typedef long long LL; typedef pair p 阅读全文
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const int MXN = 1e6 + 5; const int mod = 1e9 + 7; int n, m; int fa[MXN], idx[MXN], vis[MXN]; std::vector mp[MXN]; int mmax; int dfs(int u,int ba) { in 阅读全文