#include <bits/stdc++.h>
using namespace std;

int main(){
    unsigned long long i, a, b;
    int s, t;
    cin >> a >> b;
    for(i=a; i<=b; i++){
        if(i%3==0) cout << i << endl;
        else{
            t = i;
            for(s=0;s<=log10(i);s++){
                if(t%10==3) {
                    cout << i << endl;
                    break;
                }
                t /= 10;
            }
        }
    }
    return 0;
}