line = input().split(" ")
min_num = int(line[0])
max_num = int(line[1])

for x in range(min_num, max_num+1):

    # ３の倍数
    if x % 3 == 0:
        print(x)
        continue

    # ３のつく数
    for ch in str(x):
        if ch == '3':
            print(x)
            break