//
//  main.cpp
//  csp-jPorject
//
//  Created by Jiao Nie on 2022/7/19.
//

#include <bits/stdc++.h>
using namespace std;
int main() {
    int schooltime[8],hometime[8],sum[8];
    for(int i=0;i<7;i++){
        cin>>schooltime[i]>>hometime[i];
        sum[i]=schooltime[i]+hometime[i];
    }
    sort(sum,sum+6);
    reverse(sum,sum+6);
    for(int i=1;i<=7;i++){
        if(schooltime[i-1]+hometime[i-1]==sum[0]){
            cout<<i;
            return 0;
        }
    }
}