using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Dictionary<int, int> dict = new Dictionary<int, int>();

​

        List<int> a= new List<int>();

         Random rnd = new Random();

​

for (int i=0; i<10; i++)

        {

            {  int x = rnd.Next(1, 21);

             while (a.Contains(x))

                { x = rnd.Next(1, 21);

                }

            a.Add(x);

            } 

            }

​

for (int i=0;i<10;i++)

    {

      dict.Add(a[i],rnd.Next(1,10001));

    }

​

foreach(KeyValuePair<int, int> pair in dict)

{

    Console.WriteLine("Key = {0}, Value = {1}",

        pair.Key, pair.Value);

}

​

 int guess = 5;

        Console.WriteLine("guess:{0}",guess);

List<int> b= new List<int>();

for (int i=1;i<21;i++)

    { if(!dict.ContainsKey(i))

        b.Add(i);

    }

 int value;     

 if ( !dict.ContainsKey(guess))

 {   

     Console.WriteLine("BANG!You die!");

 }

        else

        {   dict.TryGetValue(guess, out value);

       Console.WriteLine("You earned {0} dollars!",value);

        Console.Write("You are lucky! You could have lost if you guessed the following numbers:");

         for(int i=0;i<b.Count;i++)

             Console.Write("{0} ",b[i]);

        }

    }

}