#include <iostream>
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 i1 = i;
        while(i1 > 0) {
            if(i1 % 10 == 3)  {
                cout << i << endl;
            }   
            i1 /= 10;
        }
    }
}