from itertools import product
n = 6; a = [[] for _ in range(n)]; s = set()
for _ in range(n):
    b = input(); s.add(int(b))
    for i,v in enumerate(b): a[i].append(int(v))
for p in product(range(10),repeat=n):
    x = [0]*n
    for i,b in enumerate(a):
        for u,v in zip(p,b): x[i] += u*v
    s.add(sum((v%10)*10**(n-i-1) for i,v in enumerate(x)))
print(len(s))