output_description: Print the area and perimeter of the rectangle in a line. The two integers
  should be separated by a single space.
input_description: The length a and breadth b of the rectangle are given in a line separated by a
  single space.
attempt: # -*- coding:UTF-8 -*-
  num = input().split()
  print(int(num[0]) * int(num[1]), int(num[0]) * 2 + int(num[1] * 2))
  
problem_description: Rectangle
  
  Write a program which calculates the area and perimeter of a given rectangle.
samples: [{"input": "3 5", "output": "15 16"}]