first = input()
split_first = first.split()
A = int(split_first[0])
B = int(split_first[1])



for i in range(A, B):
    f = 0
    if i%3 == 0:
        f = 1
    elif "3" in str(i):
        f = 1
    if f == 1:
        print(i)