using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Input x = ");

        var x = double.Parse(Console.ReadLine());

         double y;

        if (x<0) 

        {

        Console.Write("y=");

        Console.WriteLine(y=x*x);

        }

        else 

        {

        Console.Write("y=");

        Console.WriteLine(y=x+1);

        }

    }

}