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;
    }
    static void Main(string[] args)
    {
        var permutation = int.Parse(Console.ReadLine());
        var winner = (permutation - 1) % 2 == 0 ? Player.Petr : Player.square1001;
        Console.WriteLine(winner);
    }
}