Submission #442500

#	Time	Username	Problem	Language	Result	Execution time	Memory
442500		zxcvbnm	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	300 KiB

shoes

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

long long count_swaps(std::vector<int> s) {
	int cnt = 0;
	int n = s.size();
	vector<int> a = s;

	for(int i = 0; i < n; i += 2) {
		if (a[i] != -a[i+1] || a[i] > 0) {
			swap(a[i], a[i+1]);
			cnt++;
		}
	}
	return cnt;
}

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