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
$stdin = trim(fgets(STDIN));
$num = explode(' ', $stdin);
echo $num[0]*$num[1];
echo ' ';
echo $num[0]*2 + $num[1]*2 . "\n";