AT_abc394_a [ABC394A] 22222

You are given a string $ S $ consisting of digits. Remove all characters from $ S $ except for `2`, and then concatenate the remaining characters in their original order to form a new string.

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

Print the answer.

### Sample Explanation 1 By removing `0`, `5`, and `0` from `20250222` and then concatenating the remaining characters in their original order, the string `22222` is obtained. ### Constraints - $ S $ is a string consisting of digits with length between $ 1 $ and $ 100 $ , inclusive. - $ S $ contains at least one `2`.