//package com.company;
import java.io.*;
import java.util.Scanner;

public class Main {

    static float P = (float) Math.PI;
    public static void main(String[] args) throws IOException{

        class Circle
        {
            public float Area(float r)
            {
                return (float) (P * r * r);
            }
            public float Perimeter(float r)
            {
                return (float) (2 * P * r);
            }
        }
        class Rect
        {
            public float Area(float a, float b)
            {
                return (float) (a * b);
            }
            public float Perimeter(float a, float b)
            {
                return (float) ((a+b)*2);
            }
        }
        class Triangle
        {
            public float Area(float a, float b, float c)
            {
                float pp = (a + b + c)/2;
                float ans = (float) Math.sqrt(pp * (pp-a) * (pp-b) * (pp-c));
                return (float) (ans);
            }
            public float Perimeter(float a, float b, float c)
            {
                return (float) (a + b + c);
            }
        }
        class Elipse
        {
            public float Area(float a, float b)
            {

                return (float) (a * b * P);
            }
            public float Perimeter(float a, float b)
            {
                float ans = (float) (2 * P * (float) Math.sqrt((a*a + b*b)/2));
                return (float) (ans);
            }
        }
        FileInputStream file = new FileInputStream("input.txt");
        FileOutputStream fo = new FileOutputStream("output.txt");
        PrintWriter out_data = new PrintWriter(fo);
        Scanner scan = new Scanner(file);

        float[] a = new float[100];
        int i = 0;
        String S = scan.next();
        //System.out.println(S);
        char[] ch = S.toCharArray();
        a[0] = ch[0];
        int test = 0;
        if(a[0] == (int) 'e')test = 1;
        else a[0] = a[0] - '0';
        while(scan.hasNext())
        {
            i++;
            a[i] = scan.nextInt();
        }
        //ELIPSE CASE
        if(test == 1)
        {
            Elipse figure = new Elipse();
            float p = figure.Perimeter(a[1], a[2]); float ar = figure.Area(a[1], a[2]);
            if(Math.round(p) == (float) (Math.floor(figure.Perimeter(a[1], a[2]) * 10)/10))out_data.println("P=" + Math.round(p));
            else
            {
                float per = (float) (Math.floor(p * 10)/10);
                out_data.println("P=" + per);
            }
            if(Math.round(ar) == (float) (Math.floor(figure.Perimeter(a[1], a[2]) * 10)/10))out_data.println("A=" + Math.round(ar));
            else
            {
                float are = (float) (Math.floor(ar * 10)/10);
                out_data.println("A=" + are);
            }
        }
        else if(i == 2)
        {
            Triangle figure = new Triangle();
            float p = figure.Perimeter(a[0],a[1], a[2]); float ar = figure.Area(a[0],a[1],a[2]);
            if((float)(int)p == p)out_data.println("P=" + Math.round(p));
            else
            {
                float per = (float) (Math.floor(p * 10)/10);
                out_data.println("P=" + per);
            }
            if((float)(int)ar == ar)out_data.println("A=" + Math.round(ar));
            else
            {
                float are = (float) (Math.floor(ar * 10)/10);
                out_data.println("A=" + are);
            }
        }
        else if(i == 1)
        {
            Rect figure = new Rect();
            float p = figure.Perimeter(a[0],a[1]); float ar = figure.Area(a[0],a[1]);
            if((float)(int)p == p)out_data.println("P=" + Math.round(p));
            else
            {
                float per = (float) (Math.floor(p * 10)/10);
                out_data.println("P=" + per);
            }
            if((float)(int)ar == ar)out_data.println("A=" + Math.round(ar));
            else
            {
                float are = (float) (Math.floor(ar * 10)/10);
                out_data.println("A=" + are);
            }
        }
        else if(i == 0)
        {
            Circle figure = new Circle();
            float p = figure.Perimeter(a[0]); float ar = figure.Area(a[0]);
            if((float)(int)p == p)out_data.println("P=" + Math.round(p));
            else
            {
                float per = (float) (Math.floor(p * 10)/10);
                out_data.println("P=" + per);
            }
            if((float)(int)ar == ar)out_data.println("A=" + Math.round(ar));
            else
            {
                float are = (float) (Math.floor(ar * 10)/10);
                out_data.println("A=" + are);
            }
        }
        out_data.close();
    }
}