#include <bits/stdc++.h>

using namespace std;

int main() {
    int a, b, s, max = 0, i, day = 0;
    for (i = 1; i < 8; i++) {
        cin >> a >> b;
        s = a + b;
        if ((s > max) && (s > 8)) {
            max = s;
            day = i;
        }
    }
    cout << day;
    return 0;
}