Something

using System;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            // This should take between 1100 and 1250 ms to run.
            long c = Environment.TickCount;
            for (int i = 0; i < 30000; i++)
                Console.Write('c');
            c = Environment.TickCount - c;
            Console.WriteLine();
            Console.WriteLine(c);
        }
    }
}