Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

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

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

'use strict'

function main(input) {

    let ary = input.split(' ').map(v => ~~v)

    let a = ary.reduce((x, y) => x + y)
    let b = ary.reduce((x, y) => x - y)
    let c = ary.reduce((x, y) => x * y)

    let ans = Number(Math.max(a, b, c))
    console.log(ans)
}

main(require("fs").readFileSync("/dev/stdin", "utf8"));