#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;
        int cnt = 1;
        while(temp > 1){
            int divide = (int) pow(10, cnt);
            if(temp%divide==3){
                cout << i << endl;
                break;
            }
            temp /= divide;
            cnt++;
        }
        
    }
}