Submission #573068

#	Time	Username	Problem	Language	Result	Execution time	Memory
573068		sff_user	Arranging Shoes (IOI19_shoes)	C++17	15 / 100	22 ms	1876 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>

#define vi vector<int>
#define ll long long

using namespace std;

ll 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