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)

const print2elm = (a,b) =>  fns => console.log(fns.map(f => f(a,b)).join(" "));
const input = require('fs').readFileSync('/dev/stdin', 'utf8');
const [a,b] = input.split(" ").map(Number);
const calc = print2elm(a,b);

calc([(a,b)=>a*b,(a,b)=>(a+b)*2]);