Submission #1206010

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206010		JakobZorz	Arranging Shoes (IOI19_shoes)	C++20	50 / 100	1095 ms	1864 KiB

shoes

#include "shoes.h"
using namespace std;
typedef long long ll;

ll count_swaps(vector<int>arr){
	int n=(int)arr.size();
	ll res=0;
	for(int i=0;i<n;i+=2){
		int v=arr[i];
		int i2=-1;
		for(int j=i+1;j<n;j++)
			if(arr[j]==-v){
				i2=j;
				break;
			}
		while(i2!=i+1){
			swap(arr[i2],arr[i2-1]);
			i2--;	
			res++;
		}	
		if(arr[i]>arr[i+1])
			res++;
	}
	return res;
}

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