AT_abc389_a [ABC389A] 9x9

You are given a $ 3 $ -character string $ S $ , where the first character is a digit, the second character is the character `x`, and the third character is a digit. Find the product of the two numbers in $ S $ .

The input is given from Standard Input in the following format: > $ S $

Print the answer as an integer.

### Sample Explanation 1 From $ 3 \times 8 = 24 $ , print $ 24 $ . ### Sample Explanation 2 From $ 9 \times 9 = 81 $ , print $ 81 $ . ### Constraints - $ S $ is a $ 3 $ -character string where the first character is an integer between $ 1 $ and $ 9 $ , inclusive, the second character is the character `x`, and the third character is an integer between $ 1 $ and $ 9 $ , inclusive.