using System;

public class Program

{

    public static void Main()

    { double base_triangle;

      double height_triangle;

       double area;

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

        base_triangle=Convert.ToDouble(Console.ReadLine());

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

        height_triangle=Convert.ToDouble(Console.ReadLine());

        area=0.5*base_triangle*height_triangle;

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

    }

}