using System;

class Program
{
    /// <summary>
    /// 選手クラス
    /// </summary>
    static class Players
    {
        public static string Petr = "Petr";
        public static string square1001 = "square1001";
    }

    static void Main(string[] args)
    {
        // 入力
        var permutation = int.Parse(Console.ReadLine());

        string currentPlayer = string.Empty;
        int takeCounter = 0;
        while (permutation != 0)
        {
            takeCounter++;
            currentPlayer = takeCounter % 2 != 0 ? Players.Petr : Players.square1001;
            permutation--;
        }

        var winner = (Players.Petr == currentPlayer) ? Players.square1001 : Players.Petr;
        Console.WriteLine(winner);
    }
}