#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b,t(0),ans(0);
    for(int i=1;i<=7;i++)
    {
        cin>>a>>b;
        a+=b;
        if(a>8&&t<a)
            ans=i,t=a;
    }
    cout<<ans<<endl;
    return 0;
}
/**************************************************************
	Problem: 2244
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:54 ms
	Memory:2072 kb
****************************************************************/