using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the height of the triangle: ");

        int h = int.Parse(Console.ReadLine());

        Console.WriteLine("Enter the width of the base of the triangle: ");

        int w = int.Parse(Console.ReadLine());

        float area = h * w / 2f;

        Console.WriteLine("The area of this triangle is: {0}", area);

    }

}