Square

import java.util.Scanner;
public class Java21 {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        System.out.print("a = ");
        double a = scan.nextInt();
        System.out.print("b = ");
        double b = scan.nextInt();
        double S = a + b;
        double P = 2 * (a + b);
        System.out.print("S = " + S + "square cm\n");
        System.out.print("P = " + P + "cm");

      }

    }