[old] Caesar Cipher (decryptor) [old] Caesar Cipher (decryptor)
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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


toDecrypt("!d! [e] &f*", -3) == "a b...
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