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#include <algorithm>
#include <iostream>
#include <array>
#include <vector>
#include <numeric>
#include <random>
#include <chrono>
#include <set>
#include <map>
#include <queue>

using namespace std;

#define int long long

const int INF = 1e18 + 7;
const int MAXN = 1e4 + 1000;
const int N = 1e5 + 10;

int n;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> n;
    while (n) {
        if (n <= 9) {
            cout << "Stan wins.\n";
            return 0;
        } else if (n <= 18) {
            cout << "Ollie wins.\n";
            return 0;
        }
        n = (n + 17) / 18;
    }
}