#!/usr/bin/python

from sys import argv, stdin


# This will be different for everyone!
shift = int(argv[1])

fulltext = stdin.read().lower()

for shift in [shift]:
	ciphertext = ""
	for letter in fulltext:
		letter_number = ord(letter) - ord('a') + 1
		if letter_number < 1 or letter_number > 26:
			continue
		new_letter_number = letter_number + shift
		if new_letter_number > 26:
			new_letter_number -= 26
		ciphertext += chr(new_letter_number + ord('a') - 1)
	print ciphertext.upper()