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 Scala (2.11.7) (judge verdict: Accepted)

import scala.io.StdIn._
object Main extends App{
  val sc = new java.util.Scanner(System.in)
  val a,b = sc.nextInt
  if(a+b<a-b){
    if(a-b<a*b){
      println(a*b)
    }
    else{
      println(a-b)
    }
  }
  else{
    if(a+b<a*b){
      println(a*b)
    }
    else{
      println(a+b)
    }
  }
}