N, M = map(int, input().split())
S = [int(input(), 2) for _ in range(M)]
set_S = set(S)

def condition_1():
    return (1 << N) - 1 in set_S and 0 in set_S

def condition_2():
    for i in range(M):
        for j in range(M):
            if S[i] & S[j] not in set_S:
                return False
    return True

def condition_3():
    for i in range(M):
        for j in range(M):
            if S[i] | S[j] not in set_S:
                return False
    return True

if condition_1() and condition_2() and condition_3():
    print("Yes")
else:
    print("No")