N = int(input())

l1 = [list(map(int, input().split())) for _ in range(N)]
l2 = [list(map(int, input().split())) for _ in range(N)]

def func(x):
    return x[0]**2 + x[1]**2

l1, l2 = sorted(l1, key = func), sorted(l2, key = func)


ans = 0
x = l1[0][0]
nx = l2[0][0]
print(nx//x)