def f(a,b):
  ret=0
  for i in range(6):
    x=a%10+b%10
    a//=10
    b//=10
    x%=10
    ret+=x*(10**i)
  return ret
  
L=[int(input()) for _ in range(6)]
S=set(L)
nx=S
while 1:
  nx2=set()
  for a in nx:
    for b in S:
      x=f(a,b)
      if x not in S:
        nx2.add(x)
  if nx2==set():
    break
  else:
    S|=nx2
    nx=nx2

print(len(S))