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 Go (1.14.1) (judge verdict: Accepted)

package main

import "fmt"

func max(a, b int) int {
	if a > b {
		return a
	} else {
		return b
	}
}

func main() {
	var a, b int

	fmt.Scan(&a)
	fmt.Scan(&b)

	var r int
	r = max(a+b, a-b)
	r = max(r, a*b)

	fmt.Println(r)
}