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: Wrong Answer)

package main

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

var sc = bufio.NewScanner(os.Stdin)

func main() {
	var s string
	if sc.Scan() {
		s = sc.Text()
	}

	sei := strings.Split(s, " ")

	a, _:= strconv.Atoi(sei[0])
	b, _:= strconv.Atoi(sei[1])

	plus := a + b
	minus := a - b
	multi := a * b

	if plus > minus && plus > multi{
		fmt.Println(plus)
	}

	if minus > plus && minus > multi {
		fmt.Println(minus)
	}

	if multi > plus && multi > minus {
		fmt.Println(multi)
	}
}