using System;

​

namespace Test

{

    public class Program

    {

        public static int Main( string[] args )

        {

            if( args == null || args.Length == 0 )

            {

                return 0;

            }

            int num = int.Parse( args[0] );

            string str = "";

            for( int i = 1; i <= num; ++i )

            {

                str += i;

                Console.WriteLine( i );

            }

            return 0;

        }

    }

}

​