from itertools import permutations as perm
def to_int(digits: list):
    n = 0
    for d in digits:
        n *= 10
        n += d
    return n

def find_mult_3(num):
    digs = list(map(int, str(num)))
    perms = []
    for i in range(1, len(digs)+1):
        perms.extend(list(p) for p in set(perm(digs, i)))

    count, mx = 0, 0
    seen = set()
    for p in perms:
        n = to_int(p)
        if n and n % 3 == 0 and n not in seen:
            count += 1
            print(n,end =" ")
            if mx < n:
                mx = n
            seen.add(n)

    return [count, mx]