N, M = map(int, input().split())
assert(1 <= N <= 16 and 1 <= M <= min(1 << N, 1 << 12))
s = []
for i in range(M):
	si = input()
	assert(all(i in "01" for i in si) and len(si) == N)
	s.append(int(si, 2))
st = set(s)
ok = True
if 0 not in st or (1 << N)-1 not in st:
	ok = False
for s0 in s:
	for s1 in s:
		if s0 & s1 not in st:
			ok = False
		if s0 | s1 not in st:
			ok = False
print("Yes" if ok else "No")