#include<bits/stdc++.h>
using namespace std;
int main() 
{
	int a,b,cnt,max = 0;
	for(int i = 1;i <= 7;i++)
	{
		cin >> a >> b;
		if(a + b >= 8)
		{
			if(a + b > max) 
			{
				max = a + b; 
				cnt = i;
			}
		}
	}
	cout << cnt;
	return 0;	
}