#include <iostream>
#include <cmath>
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 > 1){
            if(temp%10==3){
                cout << i << endl;
                break;
            }
            temp /= 10;
        }
        
    }
}