old_contents: from __future__ import print_function
  import fileinput
  from operator import mul
  from functools import reduce
  
  totalArea = 0
  totalRibbon = 0
  for line in fileinput.input():
      parts = [int(i) for i in line.split('x')]
      parts.sort()
  
      sides = [parts[0] * parts[1], parts[0] * parts[2], parts[1] * parts[2]]
      totalArea += 2 * sum(sides)
  
      totalArea += min(sides)
      totalRibbon += 2 * (parts[0] + parts[1])
      totalRibbon += reduce(mul, parts, 1)
  
  print(totalArea, "paper")
  print(totalRibbon, "ribbon")
  
  
new_contents: from __future__ import print_function
  import fileinput
  from operator import mul
  from functools import reduce
  import itertools
  
  totalArea = 0
  totalRibbon = 0
  for line in fileinput.input():
      parts = [int(i) for i in line.split('x')]
      parts.sort()
  
      sides = [x * y for x, y in itertools.combinations(parts, 2)]
      totalArea += 2 * sum(sides) + min(sides)
  
      totalRibbon += 2 * (parts[0] + parts[1])
      totalRibbon += reduce(mul, parts, 1)
  
  print(totalArea, "paper")
  print(totalRibbon, "ribbon")
  
  
subject: Use itertools for better readability.