A, B = map(int, input().split())
i = A
while i <= B:
    if i % 3 == 0:
        print(i)
    else:
        l = [int(x) for x in list(str(i))]
        x = len(l) - 1
        y = 0
        while y <= x:
            if l[y] == 3:
                print(i)
                break
            else:
                y += 1
    i += 1