text: 
  """
  Read file into texts and calls.
  It's ok if you don't understand how to read files.
  """
  import csv
  with open('texts.csv', 'r') as f:
      reader = csv.reader(f)
      texts = list(reader)
  
  with open('calls.csv', 'r') as f:
      reader = csv.reader(f)
      calls = list(reader)
  
  
  """
  TASK 1:
  How many different telephone numbers are there in the records? 
  Print a message:
  "There are <count> different telephone numbers in the records."
  """
  
  numbers = set()
  for text, call in zip(texts, calls):
      numbers.add(text[0])
      numbers.add(call[0])
      numbers.add(text[1])
      numbers.add(call[1])
  
  print("There are {} different telephone numbers in the records.".format(len(numbers)))
  