Submission #722861

#	Time	Username	Problem	Language	Result	Execution time	Memory
722861		GrandTiger1729	Arranging Shoes (IOI19_shoes)	C++17	15 / 100	23 ms	2644 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

long long count_swaps(vector<int> s){
	auto a = s;
    int N = a.size(), n = N / 2;
    return 1ll * (n - 1) * n / 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