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 PHP (judge verdict: Accepted)

<?php
$input_lines = trim(fgets(STDIN));
$s = explode(" ", $input_lines);
echo $s[0] * $s[1]." ";
echo $s[0] * 2 + $s[1] * 2;
echo "\n" ;