import sys
input = sys.stdin.readline

def to_num(s):
    ret = 0
    for c in s:
        k = ord(c) - ord('0')
        ret <<= 3
        ret += k
    return ret

N, K = map(int, input().split())
st = set([to_num(input()[:-1]) for _ in [0] * N])

visited = set()
for sv in st:
    if(sv in visited):
        continue
    stk = [sv]
    while(stk):
        v = stk.pop()
        for i in range(K):
            k = i * 3
            if(((v >> k) & 7) == 0):
                continue
            nv = v - (1 << k)
            if(nv in visited):
                continue
            visited.add(nv)
            stk.append(nv)

ans = len(visited & st)
print(ans)