import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)

a, b = map(int, readline().split())
for check in range(a, b + 1):
    if check % 3 == 0 or '3' in list(str(check)):
        print(check)