Submission #619791

#	Time	Username	Problem	Language	Result	Execution time	Memory
619791		UncoolAnon	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1089 ms	3924 KiB

shoes

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

using namespace std; 
long long count_swaps(vector<int> s){
	int n=s.size(); 
	vector<int> marked(n); 
	long long answer=0; 
	for(int i=0;i<n;i++){
		if(!marked[i]){
			for(int j=i+1;j<n;j++){
				if(!marked[j]&&abs(s[j])==abs(s[i])&&(s[i]*s[j]<0)){
					marked[j]=1; 
					if(s[i]<0&&s[j]>0){}
					else ++answer; 
					break ; 
				}
				else{
					answer+=(marked[j]^1); 
				}
			}
		}
	}
	return answer; 
}

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