제출 #1030694

#제출 시각아이디문제언어결과실행 시간메모리
1030694fv3Arranging Shoes (IOI19_shoes)C++14
15 / 100
17 ms2004 KiB
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
ll count_swaps(vector<int> s) 
{
	const ll N = s.size() / 2;

	return N*(N-1ll)/2ll;
}
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