#include <cstdio>
using namespace std;

int main(){
	__int64 n;
	while(~scanf("%I64d", &n)){
		__int64 A = 9;
		while(A < n)	A *= 18;
		if(A / 9 < n)	puts("Stan wins.");
		else puts("Ollie wins.");
	}
	return 0;
}