def solve(h, w, s, t):
	b = (1 << w) - 1
	conn = all( s[i] ^ t[i] ^ b == 0 for i in range(h) )
	conn_rev = all( s[i] ^ t[~i] ^ b == 0 for i in range(h) )
	ev = 0
	p = 1
	for i in range(15):
		if i % 2 == 0:
			if conn:
				p *= 2 ** -i
		else:
			if conn_rev:
				p *= 2 ** -i
		print(i, p)
		ev += p
				
	return ev + 1 if ev < 7 else -1

h, w = [int(x) for x in input().split()]
s = [int(input().strip().replace("#", "1").replace(".", "0"), 2) for _ in range(h)]
t = [int(input().strip().replace("#", "1").replace(".", "0"), 2) for _ in range(h)]
print(solve(h, w, s, t))