import sys


def resolve(in_):
    A, B = map(int, next(in_).split())

    for v in range(A, B + 1):
        if not v % 3:
            yield v
            continue
        _v = v
        while _v > 0:
            _v, m = divmod(_v, 10)
            if m == 3:
                yield v
                break


def main():
    for ans in resolve(sys.stdin.buffer):
        print(ans)


if __name__ == '__main__':
    main()