Submission #779506

#	Time	Username	Problem	Language	Result	Execution time	Memory
779506		Minindu206	Arranging Shoes (IOI19_shoes)	C++14	25 / 100	20 ms	3108 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll count_swaps(vector<int> s)
{
	ll n = s.size() / 2;
    if(n == 1)
        return s[0] > 0;
    int iseq = 1;
    for(int i=0;i<n;i++)
        if(s[i] + s[i + n] != 0)
        {
            iseq = 0;
            break;
        }
    if(iseq)
        return n * (n - 1) / 2;
    return n;
}

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