文件目录

#include <bits/stdc++.h>
using namespace std;
bool zc(string c, int k)
{
    int ys = 0;
    for (int i = 0; i < c.size(); i++)
    {
        ys = ys * 10 + c[i] - 48;
        ys %= k;
    }
    return ys;
}
int main()
{
    string c;
    cin >> c;
    bool f = true;
    for (int i = 2; i < 10; i++)
    {
        if (!zc(c, i))
        {
            cout << i << " ";
            if (f == true)
                f = false;
        }
    }
    if (f)
        cout << "none";
    return 0;
}