#include<iostream>
using namespace std;
int main()
{
    int a,b;
    int res=0;
    int most=7;
    int place;
    for(int i=1;i<=7;i++)
    {
        cin>>a>>b;
        if(a+b>most) 
        {
            most=a+b;
            place=i;
        }
    }
    if(most==7) cout<<0;
    else cout<<place;
    return 0;
}