N = int(input())
A = list(map(int, input().split()))
X = [int(x) for x in input().split()]
d = False
for (i, x) in enumerate(X) :
	for j in range(2) :
		A[j] -= ((x >> j) & 1)
	if min(A) < 0 :
		d = True
		print(i+1)
if not d :
	print(-1)