제출 #573064

#제출 시각아이디문제언어결과실행 시간메모리
573064sff_userArranging Shoes (IOI19_shoes)C++17
0 / 100
1 ms212 KiB
#include "shoes.h"
#include <bits/stdc++.h>

#define vi vector<int>
#define ll long long

using namespace std;

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

// int main(){
// 	int p=1,n=-1;
// 	cout << count_swaps({n,n,n,n,n,n,n,p,p,p,p,p,p,p}) << endl;
// }


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