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 Go (1.6) (judge verdict: Wrong Answer)

package main

import (
	"os"
	"fmt"
	"bufio"
	"strconv"
	"strings"
)

func main() {
	sc := bufio.NewScanner(os.Stdin)
	sc.Scan()
	AB := strings.Split(sc.Text(), " ")
	A, _ := strconv.Atoi(AB[0])
	B, _ := strconv.Atoi(AB[1])

	add := A + B
	sub := A - B
	mul := A * B

	if add > sub && add > mul {
		fmt.Println(add)
	} else if sub > add && sub > mul {
		fmt.Println(sub)
	} else if mul > add && mul > sub {
		fmt.Println(mul)
	}
}