using System;

public class Program

{

    public static void Main()

    {

        double y;

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

        if (x>=0)

        { 

           y= x+1;   

           Console.WriteLine(y=x+1);

       }

       else 

       {    

         y=x+5;

        Console.WriteLine(y);

       }    

    }

}