using System;

public class MyClass

{

    private double layn, erkar;

    private MyClass(){

        this.layn = 12.5;

        this.erkar = 1.66;

    }

    public static void Main()

    {

        MyClass uxxankyun = new MyClass(); 

        Console.WriteLine(Math.Pow(uxxankyun.layn , 2) + Math.Pow(uxxankyun.erkar , 2));

    }

}