#   file: encoding.py
# This program encodes a message using ASCII codes
#

# NOTE: chr("a") = 97 and chr("z") = 122.
# When we shift we want the new value to fall within these limits. Otherwise we cycle (that is, 123 # corresponds to 97, etc, and 96 corresponds to 122)

def main():
    sentence = input("Enter sentence all in lowercase")
    sentence = sentence.lower() # Make sentence all lowercase (just in case)
    key = int(input("Enter key")) # Ask for key
    outpt = ""
    for ch in sentence:
        if ch == " ": # if character is a space, just leave the space where it is
            outpt = outpt + ch 
        elif ord(ch) + key > 122: # if after shift we get above 122, subtract 26 to go back to "a"
            outpt = outpt + chr(ord(ch)+key - 26)
        elif ord(ch) + key < 97 : # if after shift we get below 97, add 26 to go back to "z"
            outpt = outpt + chr(ord(ch)+key + 26)
        else:
            outpt = outpt + chr(ord(ch)+key)

    
            
    print(outpt)


main()