using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine("Nhap so dong: rows ");

        int rows = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Nhap so dong tren trang: size ");

        int size = Convert.ToInt32(Console.ReadLine());

        int tong = (rows + size -1) / size;

        Console.WriteLine($" Tong so trang la:{tong} ");

    }

}