Sometimes, older is better X47025

Input The first line of the input data will contain two integers separated by a space; the number of lines of encrypted text to be processed and the value of K, that is, the positions that the alphabet has to be displaced to encrypt/decrypt the message.
The following lines will contain encrypted text, consisting of capital Latin letters A ... Z. Each line will be terminated with a dot which should not be decoded.

Output Your answer should contain the decrypted message (in a single line, no line splitting is needed) and the final dot in the encrypted message.