using System;

public class Program

{

    public static void Main()

    {

int m;

int d;

Console.WriteLine("***************************");

Console.WriteLine("Inserta el Area del triángulo");

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

Console.WriteLine("Inserta la base del triángulo");

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

Console.WriteLine("***************************");

m=a*b;

d=m/2;

Console.WriteLine("***************************");

Console.WriteLine("Tú resultado es "+d);

Console.WriteLine("***************************");

    }

}