text: # --------------
  # Code starts here
  class_1 = ['Geoffrey Hinton','Andrew Ng','Sebastian Raschka','Yoshua Bengio']
  class_2 = ['Hilary Mason','Carla Gentry','Corinna Cortes']
  new_class = class_1 + class_2
  print(new_class)
  new_class.append('Peter Warden')
  new_class.remove('Carla Gentry')
  print(new_class)
  
  # Code ends here
  
  
  # --------------
  # Code starts here
  
  courses = {"Math":65,"English":70,"History":80,"French":70,"Science":60}
  subject_keys = courses.keys();
  total = sum(courses.values())
  percentage = 100*total/500
  print(percentage)
  
  
  # Code ends here
  
  
  # --------------
  # Code starts here
  mathematics ={'Geoffrey Hinton':78,'Andrew Ng':95,'Sebastian Raschka':65,'Yoshua Benjio':50,'Hilary Mason':70,'Corinna Cortes':66,'Peter Warden':75}
  
  max_marks_scored = max(mathematics,key = mathematics.get)
  #print (max_marks_scored)
  topper = max_marks_scored
  
  # Code ends here  
  
  
  # --------------
  # Given string
  topper = 'andrew ng'
  spliited = topper.split()
  first_name = spliited[0]
  last_name = spliited[1]
  # Code starts here
  full_name = last_name+' '+first_name
  certificate_name = full_name.upper()
  print(certificate_name)
  
  
  # Code ends here
  
  
  