input_text = "Hello World!"
output_text = ""
 
for character in input_text:
 
  if character.isalpha():
 
    rotated_ordinal = ord(character) + 13
 
    if (character.isupper() and character > 'M') or (character.islower() and character > 'm'):
      rotated_ordinal -= 26
 
    output_text += chr(rotated_ordinal)
 
  else:
 
    output_text += character
 
print(output_text)