def getFortunate(a,b,c):
    m = []
    n = []
    for x in range(len(a)):
        for y in range(len(b)):
            for z in range(len(c)):
                m.append(a[x]+b[y]+c[z])
    for x in m:
        a = list(set(list(str(m))))
        if a == ["5"] or a == ["8"] or a == ["5","8"] or a == ["8","5"]:
            n.append(a)

    return len(set(n))