using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static class Player
    {
        internal static string Petr = "Petr";
        internal static string square1001 = "square1001";
        internal static string currentPlayer = Petr;
        internal static string winner = "";
    }
    static void Main(string[] args)
    {
        var pn = int.Parse(Console.ReadLine());
        while(pn >= 0)
        { 
            pn--;
            if (pn == 0)
            {
                Player.winner = Player.currentPlayer == Player.Petr ? Player.square1001 : Player.Petr;
                break;
            }
            Player.currentPlayer = Player.square1001;
        }
        Console.WriteLine(Player.winner);
    }
}