new_contents: # Uses python3
  # There are two ways of running this program:
  # 1. Run
  #     python3 APlusB.py
  # then enter two numbers and press ctrl-d/ctrl-z
  # 2. Save two numbers to a file -- say, dataset.txt.
  # Then run
  #     python3 APlusB.py < dataset.txt
  
  import sys
  
  input = sys.stdin.read()
  tokens = input.split()
  a = int(tokens[0])
  b = int(tokens[1])
  if (int(a) >= 0 & b <= int(9)):
      print(a + b)
  
subject: Create aplub.py