Submission #403572

#	Time	Username	Problem	Language	Result	Execution time	Memory
403572		dxz05	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1087 ms	3104 KiB

shoes

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

using namespace std;

typedef long long ll;

long long count_swaps(vector<int> a) {
	int n = a.size();

	ll ans = 0;
	for (int i = 0; i < n; i += 2){
        int j = i;
        while (a[j] != -a[i]) j++;

        while (j > i + 1){
            swap(a[j - 1], a[j]);
            j--;
            ans++;
        }

        if (a[i] > 0){
            ans++;
            swap(a[i], a[i + 1]);
        }

	}

	return ans;
}

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