Submission #573033

#	Time	Username	Problem	Language	Result	Execution time	Memory
573033		sff_user	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1094 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) {
		int n = s.size()/2;
		ll ans = 0;
		int encZ = 0;
		for(int i = 0 ;i < 2*n ; i++){
			encZ = 0;
			if(s[i]==0) continue;
			for(int j = i+1;j < 2*n ; j++){
				if(s[j]==0) encZ++;
				if(s[j]+s[i] == 0){
					if(s[i]>0){
						ans+= j-i-encZ;
					}else {
						ans+=j-i-1-encZ;
					}
					s[j] = 0;
					break;
				}
			}
		}
		return ans;
	}


// int main() {
// 	cout << count_swaps({-2, 2, 2, -2, -2, 2}) << endl;
// 	cout << count_swaps({2, 1, -1, -2}) << endl;
// }

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