Submission #312461

#	Time	Username	Problem	Language	Result	Execution time	Memory
312461		Nayna	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	37 ms	3192 KiB

shoes

#include "shoes.h"
using namespace std;
typedef long long ll;

long long count_swaps(vector<int> s)
{
    ll n = s.size()/2;

    ll ans = (n*(n-1))/2;
    return ans;
}

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