using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("please write the support");

        double floor=convert.Todouble(console.readline());

        console.writeline("please write the size")

        double size=convert.todouble(console.readline());

        double exprection=(floor*size)/2

        console,writeline ("the total area of the triangulo")   

}

}