Problem:
Score : 100 points

Problem Statement

Compute A \times B.

Constraints

1 \leq A \leq 100

1 \leq B \leq 100

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the value A \times B as an integer.

Sample Input 1

2 5

Sample Output 1

10

We have 2 \times 5 = 10.

Sample Input 2

100 100

Sample Output 2

10000

Solution in PHP (7.4.4) (judge verdict: Accepted)

<?PHP
$input=explode(' ',trim(fgets(STDIN)));
$a=intval($input[0]);
$b=intval($input[1]);

if($a > 100){
  echo -1;
  return;
}
if($b > 100){
  echo -1;
  return;
}

$kotae = $a * $b;
echo $kotae;