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 PHP (5.6.30) (judge verdict: Accepted)

<?php
# 数値の入力
fscanf(STDIN, "%d %d", $data1, $data2);
$plus = $data1 + $data2;
$minus = $data1 - $data2;
$Multiplication = $data1 * $data2;

if($plus >= $minus and $plus >= $Multiplication){
    echo $plus."\n";
}elseif($minus >= $plus and $minus >= $Multiplication){
    echo $minus."\n";
}else{
    echo $Multiplication."\n";
}
?>