#include    <iostream>
#include    <fstream>

using namespace std;

ifstream fin("numere.in");

int main()
{
    int n,nr=0;
    while(fin >> n)
    {
        //cout << "Numerele sunt: " << n << "\n";
        if(n%3-1==0) {
            cout << n << " ";
            nr++;
        }
    }
    if(nr==0)
    {
        cout<<"Nu exista";
    }
    return 0;
}