제출 #240813

#제출 시각아이디문제언어결과실행 시간메모리
240813ikura355Arranging Shoes (IOI19_shoes)C++14
15 / 100
34 ms3192 KiB
#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;

#define ll long long

long long count_swaps(std::vector<int> s) {
	ll n = s.size() / 2;
	return n * (n-1) / 2;
}
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