using System;

public class Program

{

    public static void Main()

    {

        int h,b,tarea;

        Console.WriteLine("Area Of Triangle");

        Console.WriteLine("Enter height:");

        h = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter base");

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

        tarea = (b*h)/2;

        Console.WriteLine("Area Of Triangle is " + tarea);

        int s,sarea;

        Console.WriteLine("Area Of Square");

        Console.WriteLine("Enter side:");

        s = Convert.ToInt32(Console.ReadLine());

        sarea = s*s;

        Console.WriteLine("Area Of Square is " + sarea);

        int hr,w,rarea;

        Console.WriteLine("Area Of Rectangle");

        Console.WriteLine("Enter height:");

        hr = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter width");

        w = Convert.ToInt32(Console.ReadLine());

        rarea = w*hr;

        Console.WriteLine("Area Of Rectangle is " + rarea);

        int l,pw,prarea;

        Console.WriteLine("Perimeter Of Rectangle");

        Console.WriteLine("Enter lenght:");

        l = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter width");

        pw = Convert.ToInt32(Console.ReadLine());

        prarea = 2*(l+w);

        Console.WriteLine("Perimeter Of Rectangle is " + prarea);

    }

}