Submission #677036

#	Time	Username	Problem	Language	Result	Execution time	Memory
677036		hello_there_123	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1082 ms	3256 KiB

shoes

#include<bits/stdc++.h>
#include "shoes.h"
using namespace std;
long long count_swaps(vector<int>s) {
    int ans = 0;
	int n = s.size();
	bool arr[n+3];
	memset(arr,0,sizeof(arr));
	for(int i=0;i<n;i++){
		if(arr[i]) continue;
		int cnt = 0;
		for(int j=i+1;j<n;j++){
			if(s[j] == -s[i] &&  arr[j] == 0){
				arr[j] = 1;
				ans+=cnt;
				break;
			}
			else if(arr[j] == 0) cnt++;
		}
		if(s[i]>0) ans++;
		
	}
	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