#include<iostream>
using namespace std;
int num;
void gcd(int a,int b)
{
    if(b==0)
    {
        num--;
        return ;
    }
    if(a/b>=2)    //只要碰到倍数超过2则必胜
        return ;
    num++;
    gcd(b,a%b);
}
int main()
{
    int a,b;
    while(cin>>a>>b,a||b)
    {
        num=0;
        gcd(max(a,b),min(a,b));
        if(num%2==0)
            cout<<"Stan wins"<<endl;
        else
            cout<<"Ollie wins"<<endl;
    }
}