#include<iostream>
using namespace std;
int a[8],b[8],maxx,x;
int main(){
	for(int i=0;i<7;i++){
		cin>>a[i]>>b[i];
		if(a[i]+b[i]>8&&a[i]+b[i]>maxx){
			x=i+1;
			maxx=a[i]+b[i];
		}
	}
	cout<<x;
	return 0;
}