#include<iostream>

using namespace std;

int main(){
  int a,b;
  cin >> a >> b;
  for(int i=a; i<=b; i++){
    if(i%3==0){
      cout << i << endl;
      continue;
    }
    int temp=i;
    while(temp>0){
      if(temp%10==3){
        cout << i << endl;
        break;
      }
      temp /= 10;
    }
  }
  return 0;
}