学步园

#include<cstdio>
int main(){
	double n;
	while(scanf("%lf",&n)!=EOF){
		while(1){
			if(n<=9){printf("Stan wins.\n");break;}
			else if(n<=18){printf("Ollie wins.\n");break;}
			n/=18;
		}
	}
	return 0;
}