using System;

public class Program

{

    public static void Main()

    {

        float x;

        Console.WriteLine("מספר שלם");

        x = float.Parse(Console.ReadLine());

        if ( x<=3.14)

        {

            Console.WriteLine("PAI");

        }

            else

            {

                            Console.WriteLine("BIG");

            }

     }

}