Submission #397697

#	Time	Username	Problem	Language	Result	Execution time	Memory
397697		ly20	Arranging Shoes (IOI19_shoes)	C++17	15 / 100	30 ms	3128 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> s) {
	int n = s.size();
	long long pr = n / 2;
	return (pr * (pr - 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