def main():
    d = list(map(int,input().split()))
    for i in range(d[0],d[1]):
        if i % 3 ==0:
            print(i)
        else:
            c=str(i)
            for j in range(0,len(c)):
                if c[j] == '3':
                    print(int(i))




if __name__ == '__main__':
    main()