Submission #1040815

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040815		idas	Arranging Shoes (IOI19_shoes)	C++17	15 / 100	12 ms	2000 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i=(begin); i<(end); i++)

using namespace std;
typedef vector<int> vi;

const int N=1e5+10;
int n;

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

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