Codeforces Round #639 (Div. 2)

A. Puzzle Pieces 題目連接:https://codeforces.ml/contest/1345/problem/Aios #include <bits/stdc++.h> #define rush() int T;cin>>T;while(T--) #define go(a) while(cin>>a) #define ms(a,b) memset(a,b,sizeof a) #
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