using System;

​

public class Program

{

    public static void Main()

    {

        { // write 10 random characters with capital first letter

            // random.next(x,y) ==> [ x , y )

            Random rnd = new Random();

            for (int i = 1; i <= 10; i++)

            {

                Console.Write(i == 1 ? ((char)rnd.Next(65, 91)) : ((char)rnd.Next(97, 123)));

            }

        }

    }

}