using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("This program calculates " +

"The area of a rectangle or a triangle");

Console.WriteLine("Enter a and b(for rectangle) " +

"or a and h (for triangle): ");

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

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

Console.WriteLine("Enter 1 for a rectangle or " +

"2 for a triangle: ");

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

double area = (double) (a * b) / choice;

Console.WriteLine("The area of your figure is " + area) ;

    }

}