text: #!/usr/bin/env python
  
  import fileinput
  import re
  
  acronym = ""
  for line in fileinput.input():
      words = re.split('\s+', line)
      for word in words:
          if (len(word) > 0 and word[0] == word[0].upper()):
              acronym += word[0]
      print(acronym)
  
  