def main():
    a, b = map(int, input().split(' '))
    for i in range(a, b + 1):
        str_i = str(i)
        x = str_i.find("3")
        if x != -1:
            print(i)
            continue

        if i % 3 == 0:
           print(i)
        else:
           pass

if __name__ == "__main__":
    main()