from itertools import product

As = [list(map(int, input())) for _ in range(6)]

S = set()
for C in product(list(range(10)), repeat=6):
   X = [0]*6
   for j, A in enumerate(As):
      for i in range(6):
         X[i] += C[j] * A[i]
   X = [x%10 for x in X]
   S.add("".join(map(str, X)))

ans = len(S)
print(ans)