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C# hello world

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("hello\n");
            Console.ReadKey(true);
            //System.Threading.Thread.Sleep(20000);