using System;
public class Program
{
public static void Main()
Sentence s = new Sentence();
Console.WriteLine(s[8]);
}
public class Sentence
string[] word = "con trai ma khong co su nghiep con gai no choi xong no bo".Split();
public string this [int wordNum]
get { return word [wordNum];}
set { word [wordNum] = value;}