import java.io.BufferedReader;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author STUDENT
 */
class square{
    String Shape;
    int side;
    
    public void compute1(String a){
        int area= side*side;
        System.out.println("Area of "+Shape+ " is: "+area);
    }
}
class rectangle{
    String Shape;
    int length;
    int width;
    
    public void compute2(String a){
        int area= width*length;
        System.out.println("Area of "+Shape+ " is: "+area);
    }
}

class triangle{
    String Shape;
    int base;
    int height;
    
    public void compute3(String a){
        int area= base*height/2;
        System.out.println("Area of "+Shape+ " is: "+area);
    }
}

public class Figure {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); 
        System.out.println("What is the shape of your figure?");
        System.out.println("[S] Square");
        System.out.println("[R] Rectangle");
        System.out.println("[T] Triangle");
        System.out.println("What is your choice?         ");
        String strChoice=br.readLine();
        char choice= strChoice.charAt(0);
        
        switch (choice){
            
            case 'S':
            case 's': 
                square s= new square();
                s.Shape= "Square";
                System.out.println("side: ");
                String strSide= br.readLine();
                s.side= Integer.parseInt(strSide);
                s.compute1(s.Shape);
                break;
            case 'R':
            case 'r':
                rectangle r= new rectangle();
                r.Shape= "Rectangle";
                System.out.println("length: ");
                String strLength= br.readLine();
                r.length= Integer.parseInt(strLength);
                System.out.println("width: ");
                String strWidth= br.readLine();
                r.width= Integer.parseInt(strWidth);
                r.compute2(r.Shape);
                break;
                
            case 'T':
            case 't': 
                triangle t= new triangle();
                t.Shape= "Triangle";
                System.out.println("base: ");
                String strBase= br.readLine();
                t.base= Integer.parseInt(strBase);
                System.out.println("height: ");
                String strHeight= br.readLine();
                t.height= Integer.parseInt(strHeight);
                t.compute3(t.Shape);
                break;
                
                
            
            
            
        }
        
        
        
        
        
        
    }

}