text: # --------------
  # Code starts here
  class_1 =['Geoffrey Hinton','Andrew Ng','Sebastian Raschka','Yoshua Bengio']
  print (class_1)
  class_2 = ['Hilary Mason','Carla Gentry','Corinna Cortes']
  print (class_2)
  new_class = class_1 + class_2
  print (new_class)
  new_class.append('Peter Warden')
  print (new_class)
  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}
  total = sum(courses.values())
  print (total)
  percentage = total *(100/500)
  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}
  
  topper = max (mathematics, key = mathematics.get)
  
  print(topper)
  
  # Code ends here  
  
  
  # --------------
  # Given string
  topper = 'andrew ng'
  
  
  # Code starts here
  first_name = (topper.split()[0])
  print (first_name)
  last_name = (topper.split()[1])
  print (last_name)
  full_name = (last_name +" "+ first_name)
  print (full_name)
  certificate_name = full_name.upper()
  print(certificate_name)
  # Code ends here
  
  
  