from itertools import product

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

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

ans = len(d)
print(ans)