#include <cstdio>
using namespace std;
int main()
{
	int c1,c2,max1 = 0,max2 = 0,i = 1;
	for (;i <= 7;i++)
	{
		scanf("%d %d",&c1,&c2);
		if (c1 + c2 >= 8 && c1 + c2 > max1)
		{
			max1 = c1 + c2; 
			max2 = i;
		}
	}
	printf("%d",max2);
	return 0;
}