using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

​

    int a = 0;

    //int b = 0;

    int result = 0;

    string unos;

    const int MAX = 3;

    //string unos2;

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

        {

    Console.WriteLine("Unesite brojeve");

    unos = Console.ReadLine();

    a = Convert.ToInt32(unos);

    result = result + a;

            if(result > 21)

            { break;

            }

    //Console.WriteLine("Unesite drugi broj");

    //unos2 = Console.ReadLine();

    //b = Convert.ToInt32(unos2);

        }

        Console.WriteLine("Suma je " + result );

    }

}

​

​

​