UVA - A Multiplication Game

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
bool can_win(ll n,ll p)
{
    if(p * 9 < n && p * 18 >= n)
        return false;
    for(ll i=2; i<=9; i++)
    {
        if(can_win(n,p*i)==false)
            return true;
    }
    return false;
}
int main()
{
    ll n;
    while(cin>>n)
    {
        if (n == 1)
            puts("Ollie wins.");
        else if (n >= 2 && n <= 9)
            puts ("Stan wins.");
        else
        {
            bool c= can_win(n,1);
            if(c)
                printf("Stan wins.\n");
            else
                printf("Ollie wins.\n");
        }

    }
    return 0;
}