Contest: Task: Related: TaskB

Score : $100$ points

You are given a $3$-character string $S$, which is a concatenation of integers $a$ and $b$ between $1$ and $9$ (inclusive) and the character `x`

in this order: `axb`

.

Find the product of $a$ and $b$.

- The length of $S$ is $3$.
- The $1$-st and $3$-rd characters are digits between $1$ and $9$ (inclusive).
- The $2$-nd character is
`x`

.

Input is given from Standard Input in the following format:

$S$

Print the answer.

3x7

21

We have $3 \times 7 = 21$, which should be printed.

9x9

81

1x1

1