Submission #807697

#	Time	Username	Problem	Language	Result	Execution time	Memory
807697		Essa2006	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	15 ms	3128 KiB

shoes

#include<bits/stdc++.h>
#include "shoes.h"
#include <cstdio>
#include <cassert>
using namespace std;
#define ll long long 
#define endl '\n'
#define FF firtst
#define SS second
#define all(a) a.begin(), a.end()
#define mod (ll)(1000000007)
long long count_swaps(std::vector<int> S) {
    ll ans=S.size()/2;
    return ans*(ans-1)/2;
}


//int main() {
//	int n;
//	assert(1 == scanf("%d", &n));
//	vector<int> S(2 * n);
//	for (int i = 0; i < 2 * n; i++)
//		assert(1 == scanf("%d", &S[i]));
//	fclose(stdin);
//
//	long long result = count_swaps(S);
//
//	printf("%lld\n", result);
//	fclose(stdout);
//	return 0;
//}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15