Caesar Cipher (decryptor)
Elementary
RU English
The mission is in Reviewing Mode. You can't see the solutions Leader Board, but you can see other user solutions through the Random Review after you solve the mission.

This mission is the part of set. Another one - Caesar cipher encryptor.

Oh no! When we received an encrypted text we've noticed that there are some extra symbols!
Your mission is to decrypt a secret message (which consists of text, the whitespace characters and special chars like "!", "&", "?" etc.) using Caesar cipher where each letter is replaced by another that stands at a fixed distance. For example ("a b c", 3) == "d e f". Also you should ignore/delete all special characters. So the message like this ("!d! [e] &f*", -3) will be decrypted just as "a b c" and nothing more.

Input: A Secret message as a string (lowercase letters only, white spaces and special characters)

Output: The same string, but decrypted into a normal text

Example:

```to_decrypt("!d! [e] &f*", -3) == "a b c"
to_decrypt("x^\$# y&*( (z):-)", 3) == "a b c"
to_decrypt("iycfbu!@# junj%&", -16) == "simple text"
to_decrypt("*\$#%swzybdkxd !)(^#%dohd", -10) == "important text"
to_decrypt("fgngr **&&frperg^__^", 13) == "state secret"
```

How it is used: For cryptography and to save important information.

Precondition:
0 < len(text) < 50
-26 < delta < 26