小a的排列

https://ac.nowcoder.com/acm/contest/317/G C++版本一 std 題解：模擬，思維 #include<bits/stdc++.h> using namespace std; const int MAXN = 1e5 + 10, INF = 1e9 + 10; inline int read() { char c = getchar(); int x

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