The alphabets a z are represented by the number 1 .. 26 respectively. Write a python program to encrypt the given word such that the encryption key is d which gives the position of the changing variable from the original letter. The key is applied to each letter in the word for encryption i.e., if the letter is a and d=4, then (a+d = 1+4) after encryption a becomes e. Eg: The word is cat, key d = 1, the encrypted word is dbu Input Format

Input the position of the letter to be altered.

Input the word

Output Format

Print the Cipher text