include <bits/stdc++.h>

using namespace std;

int main() {

int a = 0, b = 0, c, d, e = 0;
for (int i = 1; i < 7; i++) {
	scanf("%d %d", &c, &d);
	e = c + d;
	if (a < e && e > 8) {
		a = e;
		b = i;
	}
}
printf("%d", b);
return 0;

}