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 Perl (v5.18.2) (judge verdict: Runtime Error)

    my $line = <STDIN>;
    chomp($line);
    my @strlist = split(/ /, $line);
    my $a = strlist[0];
    my $b = strlist[1];
     
    my $c = $a + $b;
     
    if (($a + $b) < ($a - $b)) {
      $c = $a - $b;
    } elsif ( ($a + $b) < ($a * $b)) {
      $c = $a * $b;
    }
    print $c;