n, m = map(int, input().split())
A = [int(input(), 2) for _ in range(m)]
B = [0] * (1 << n)
for a in A:
    B[a] = 1

f = 1
for bit in range(1 << n):
    if B[bit]:
        for i in range(n):
            if not bit >> i & 1:
                if not B[bit | 1 << i]:
                    f = 0

if f and not B[0]:
    print("Yes")
else:
    print("No")