text: c = {"comp":[name, last_name, bYear, dYear]}
  while True:
      user = input('name, last name, bYear, dYear separeted by space: ').split(' ')
      c.append(user)
      y = input('one more?(y/n): ')
      if y == 'n':
          break
  age = int.c[3] - int.c[2]
  def sum(a):
      s = 0
      for n in a:
          s = s + n
      avg = s/len(a)
      return avg
  print(f"age=" {age} ,"avg=" avg)
  
  # ya pitalsy, ne poluchilos`