using System;class P{static void Main(){string[]CSL=Console.ReadLine().Split();int A=int.Parse(CSL[0]);int B=int.Parse(CSL[1]);int n=0;string S_i="";int  lng=0;for(int i=A;i<=B;i++){n=0;lng=i.ToString().Length;if(i%3==0){Console.WriteLine(i);continue;}S_i=i.ToString();while(true){if(S_i[n]=='3'){Console.WriteLine(i);break;}n++;if(n>=lng){break;}}}Console.ReadKey();}}