Submission #1355603

#	Time	Username	Problem	Language	Result	Execution time	Memory
1355603		Charizard2021	Arranging Shoes (IOI19_shoes)	C++20	50 / 100	1095 ms	3652 KiB

shoes

#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> s){
	long long n = (long long)s.size()/2;
	long long ans = 0;
	for(int i = 0; i < n; i++){
		int idx = -1;
		for(int j = 0; j < (int)s.size(); j++){
			if(s[0] == -s[j]){
				idx = j;
				break;
			}
		}
		if(s[0] < 0){
			ans += idx - 1;
		}
		else{
			ans += idx;
		}
		vector<int> s2;
		for(int j = 1; j < (int)s.size(); j++){
			if(j != idx){
				s2.push_back(s[j]);
			}
		}
		swap(s, s2);
	}
	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