제출 #645375

#제출 시각아이디문제언어결과실행 시간메모리
645375rc_catuntaArranging Shoes (IOI19_shoes)C++17
15 / 100
17 ms1864 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(vector<int> s) { long long n = s.size()/2LL; long long res = (n-1LL)*n/2LL; return res; }
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