input_text = "Hello World!"
output_text = ""

from_map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
to_map   = "NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm"

for character in input_text:

  search_index = 0

  while search_index < len(from_map) and character != from_map[search_index]:
    search_index = search_index + 1
  
  if search_index == len(from_map):
    output_text = output_text + character
  else:
    output_text = output_text + to_map[search_index]

print(output_text)
# your code goes here