n,K=map(int,input().split())
a=[int(input(),5) for i in range(n)]
q=[0]*(5**K)
for v in a:
  q[v]=1
for j in range(K):
  for i in reversed(range(5**K)):
    if (i//(5**j))%5>0:
      q[i-(5**j)]+=q[i]
print(n-sum(q[v]==1 for v in a))