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 (1.6) (judge verdict: Accepted)

package main

import (
	"fmt"
	"io"
	"os"
)

func proc(r io.Reader, w io.Writer) {
	var a, b int
	fmt.Fscanf(r, "%d %d", &a, &b)
	o := a + b
	if o < a-b {
		o = a - b
	}
	if o < a*b {
		o = a * b
	}
	//fmt.Printf("%#v", numbers)
	fmt.Fprintf(w, "%d", o)
}

func main() {
	proc(os.Stdin, os.Stdout)
}