#include <iostream>
using namespace std;
int a[1010],b[1010],c[1010];
int main(){
    int max=0,k;
    for(int i=1;i<=7;i++){
        cin>>a[i]>>b[i];
        c[i]=a[i]+b[i];
        if(c[i]>8 and c[i]>max){ max=c[i];k=i;}
    }
    cout<<k;
    return 0;
}