Submission #784124

#	Time	Username	Problem	Language	Result	Execution time	Memory
784124		Alfraganus	Arranging Shoes (IOI19_shoes)	C++14	25 / 100	21 ms	3128 KiB

shoes

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

long long count_swaps(vector<int> s) {
	long long n = s.size() / 2;
	if(n == 1)return s[0] > 0;
	return n * (n - 1) / 2;
}

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