## include <bits/stdc++.h>
using namespace std;

int main(){
	int a,a1,a2,maxa = -1,index,c = 0;
	for (int i = 1; i <= 7; i++){
		cin >> a1 >> a2;
		a = a1 + a2;
		if (a > maxa){
			maxa = a;
			index = i;
		}
	}
	cout << index << endl;
	return 0;
}