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 JavaScript (judge verdict: Accepted)

'use strict';
(function(stdin) { 
  var inputs = stdin.toString();
  var params = inputs.split('\n')[0].split(' ').map(Number);
  (function(a,b) {
    //???????????????
    function f1 (a,b){
        return a*b;
    }
    function f2 (a,b){
        return (a+b)*2;
    }
    console.log(f1(a,b), f2(a,b));
    
    
  }(params[0],params[1])); 
}(require('fs').readFileSync('/dev/stdin', 'utf8')));