제출 #813671

#제출 시각아이디문제언어결과실행 시간메모리
813671math_rabbit_1028Arranging Shoes (IOI19_shoes)C++14
15 / 100
19 ms1876 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; int n; long long count_swaps(std::vector<int> s) { n = s.size()/2; return (ll)n * (n - 1) / 2; }
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