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: Wrong Answer)

<?php 
$n = trim(fgets(STDIN));
$line = explode(' ', $n);

var_dump($line);
$ans = ($line[0]*2)+($line[1]*2);

print($ans."\n");