Problem:
Rectangle

Write a program which calculates the area and perimeter of a given rectangle.

Input

The length a and breadth b of the rectangle are given in a line separated by a single space.

Output

Print the area and perimeter of the rectangle in a line. The two integers should be separated by a single space.

Constraints

1 ≤ a, b ≤ 100

Sample Input 1

3 5

Sample Output 1

15 16

Solution in JAVA (judge verdict: Wrong Answer)

import java.io.*;
import java.util.*;
class Main{
    public static void main(String[] args)throws IOException{
    	double a, b, s, l; // s:??¢???, l:??¨?????????
    	InputStreamReader isr =new InputStreamReader(System.in);
   		BufferedReader br =new BufferedReader(isr);
        String buf = br.readLine();
        StringTokenizer st = new StringTokenizer(buf," ");
    	a = Double.parseDouble(st.nextToken());
        b = Double.parseDouble(st.nextToken());
    	s = a*b;
    	l = (a + b) * 2;
        System.out.printf("%f %f\n", s, l);
    }
}