import sys
input = sys.stdin.readline

A=[int(input()) for i in range(6)]
U=[10**i for i in range(6)]
def calc(x,y):
    ANS=0
    for i in U:
        ANS += ((x//i + y//i)%10) * i
    return ANS

DP=[0]*(10**6)
DP[0]=1
Q=[0]
while Q:
    x=Q.pop()
    for a in A:
        to=calc(a,x)
        if DP[to]==0:
            DP[to]=1
            Q.append(to)

print(sum(DP))