using System;

​

public class Program

{

    public static void Main()

    {

        int[] num=  {6, 2, 3,1, 2,7,6,5,8,9};

        for (int i = 0; i < num.Length; i++)

        {

            num[i] = num[i] * 2;

            Console.WriteLine(num[i]);

        }

    }

}