#include <iostream>
using namespace std;

int main(void){
  long long int a, b;
  cin >> a >> b;
  for(int i = a;i < b;i++){
    if(i%3 == 0){
      cout << i << endl; continue;
    }
    long long int x = i;
    while(x > 0){

      if(x%10 == 3){
        cout << i << endl; break;
      }
      x /= 10;
    }
  }
  return 0;
}