Decrypting the Caesar Cipher Message

You are given a message that has been encrypted by shifting each alphabetical character 3 positions forward in the alphabet (wrapping around from z to a). The decryption process consists of shifting each letter 3 positions backward. Spaces remain unchanged.

For example, the encrypted message \(\texttt{khoor zruog}\) should be decrypted to \(\texttt{hello world}\).

Read the encrypted message from standard input and output the decrypted message to standard output.

inputFormat

The input consists of a single line containing a string which is the encrypted message. The string may include spaces and contains only lowercase English letters and spaces. The input is read via standard input (stdin).

outputFormat

Output the decrypted message as a string to standard output (stdout). Ensure that spaces are preserved as in the input.

khoor zruog

hello world