洛谷 P2525 Uim的情人節禮物·其之壱

思路：利用STL函數c++ #include<bits/stdc++.h> using namespace std; const int MAXSIZE = 10; int main() { int n; int a[MAXSIZE]; cin >> n; for (int i = 0; i < n; i++) cin >> a[i]; if (prev_permutation(a,

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