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