#include<stdio.h>

int main() 
{
	int arr_a[14] = { 0 };
	int i = 0, j;
	//int index = getchar();
	while (i <14) {
		scanf("%d %d", &arr_a[i], &arr_a[i + 1]);
		i+=2;
	}
	

	int b = 0, max = 8;
	for (j = 13; j > 0;)
	{
		if (arr_a[j - 1] + arr_a[j] >= max)
		{
			b = (j + 1) / 2;
			max = arr_a[j - 1] + arr_a[j];
		}
		j -= 2;
	}
	printf("%d", b);

	return 0;
}