using System;

public class Program

{

    public static void Main()

    {

        Program pew=new Program();

        Program.mymethod(100);

        int res=pew.multi(20,20);

        Console.WriteLine("res is:{0}",res);

    }

    public int multi(int x,int y){

        return x*y;

    }

    public static void mymethod(int target){

        int count=0;

        while(count<=target){

            Console.Write(count + " " );

            count++;

        }

    }

}