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

list = []
for i in range(0, B):
    list.append(i*3)


for i in range(A, B):
    if i in list:
        print(i)
    elif "3" in str(i):
        print(i)