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 Scala (2.11.7) (judge verdict: Accepted)


import java.util.Scanner

object Main {

  def read(): (Int, Int) = {
    val sc: Scanner = new Scanner(System.in)
    val a, b = sc.nextInt
    sc.close()
    (a, b)
  }


  def solve(a: Int,b: Int): Int = {
    Seq(a+b, a-b, a*b).max
  }


  def main(args: Array[String]): Unit = {
    val (a, b) = read()
    println(solve(a, b))
  }

}