#include<iostream>

using namespace std;

int main(){
    int x,y,z;
    cin >> x >> y;
    for(int i = x; i<y; i++){
      z = 0;
      if(i%3==0||i%10==3)
        z = 1;
      for(int t = i;t;t/10)
      if(t%10==3)
        z = 1;
      if(z==1)
        cout << i << endl;
}
    return 0;
}