Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

Print the largest number among A + B, A - B, and A \times B.

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest number among A + B, A - B, and A \times B.

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in OCaml (4.02.3) (judge verdict: Accepted)

open Scanf
open Printf

let rint () = scanf " %d" (fun x -> x)
let stoa s = Array.init (String.length s) (String.get s)
let atos a = String.init (Array.length a) (Array.get a)

let () =
  let a = rint() and b = rint() in
  printf "%d\n" (max (a + b) (max (a - b) (a * b)))