제출 #837831

#제출 시각아이디문제언어결과실행 시간메모리
837831DarkMatterArranging Shoes (IOI19_shoes)C++14
0 / 100
0 ms212 KiB
#include<bits/stdc++.h> #include "shoes.h" using namespace std; long long count_swaps(std::vector<int> v) { long long n = v.size(); long long ans = n * (n - 1) / 2; return ans; }
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