#include<bits/stdc++.h>
using namespace std;

int main()
{
	int , x, max=0, rs;
	cin>>rs;
	int a[rs+1],b[rs+1],id[rs+1];
	for(int i=1;i<=rs;i++)
		cin>>b[i]>>a[i];
	sort(b+1,b+1+rs)
	for(int i=1;i<=rs;i++)	
		if(b[i]>=60) 
			
			
				cout<<i<<" ";
				a[i]--;}
				}
			}
	for(int i=0;i<=max;i++){
		
		while(a[i]){
			if(i%2!=0) break;
			if(i%2==0){
		
				cout<<i<<" ";
				a[i]--;	}
				}
			}
		
	return 0;
}