using System;

namespace yoru
{
    class Program
    {
        static void Main(string[] args)
        {
            int inputNumber = int.Parse(Console.ReadLine());
            
            if (inputNumber<=1)
            {
                Console.WriteLine((1).ToString());
                return;
            }

            string outputString = string.Empty;
            for(int i=0;i<inputNumber;++i)
            {
                for(int j=inputNumber;j>0;)
                {
                    outputString += (--j).ToString();
                }
            }
            
            Console.WriteLine(outputString);
            return;
        }
    }
}