Практикум 3, задание 2, номер 11

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace mainSolution
{
    public class MyException : Exception
    {
        public MyException(string messege) : base(message: messege + "\n\n\n Exception founded by Decibit\n\n\n") { }
        public MyException() : base()
        {

        }
        public void Messsage()
        {
            Console.WriteLine("\n\n\n\n\n\n Invalid number, please enter a number from 1 to 10 \n\n\n\n\n\n");
        }


    }
    class Input
    {
        private static IEnumerator<string> getin()
        {
            while (true)
                foreach (string s in Console.ReadLine().Split().Where(x => x.Length > 0))
                    yield return s;
        }

        private IEnumerator<string> inp = getin();

        public string GetString() { inp.MoveNext(); return inp.Current; }
        public int GetInt() { return int.Parse(GetString()); }
        public long GetLong() { return long.Parse(GetString()); }
        public double GetDouble() { return double.Parse(GetString()); }
    }

    static class Program
    {
        static public Input cin = new Input();




        static void Main(string[] args)
        {

            double x = cin.GetDouble();
            double y = cin.GetDouble();
            if (y < 0 && x * x + y * y == 12 * 12
            ||  y == 0 && x <= 0 && x >= -12
            ||  x*x + y*y == 12*12 && x < y && x >= 0
            ||  x == y && x >= 0 && y >= 0)
            {
                Console.WriteLine("On Board");
                return;
            }
            if (x > y && x >= 0 && y > 0
            ||  x <= 0 && y > 0)
            {
                Console.WriteLine("NO");
                return;
            }
            else
            {
                Console.WriteLine("YES");
            }


        }
    }

}