using System;
namespace P3-5
{
    class Program
    {
      static void Main(string[] args)
        {
            int count,sum;
            count = 1;
            sum = 0;				
            while (count <= 100)
            {
                sum += count ;
                count++;
            }
            Console.WriteLine("1100ۼӺǣ{0}",sum);
            Console.ReadLine();
     }
    }
}
