output_description: If the total value of N bills cannot be Y yen, print `-1 -1 -1`.
  
  If the total value of N bills can be Y yen, let one such set of bills be "x
  10000-yen bills, y 5000-yen bills and z 1000-yen bills", and print x, y, z
  with spaces in between. If there are multiple possibilities, any of them may
  be printed.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N Y
attempt: n, total = map(int, input().split())
  
  x=0
  y=0
  z=0
  
  while True:
    found = False
  
    while True:
      z = n - x - y
      sum = 10000 * x + 5000 * y + 1000 * z
      if sum == total
        found = True
        break
      elif sum >  total
        break
      y =+ 1
  
    if found ==  True
      break
    if 10000 * x > total
      x = -1
      y = -1
      z = -1
      break
    x += 1
  
  print("{} {} {}".format(x, y, z))
problem_description: Statement
  
  The commonly used bills in Japan are 10000-yen, 5000-yen and 1000-yen bills.
  Below, the word "bill" refers to only these.
  
  According to Aohashi, he received an otoshidama (New Year money gift) envelope
  from his grandfather that contained N bills for a total of Y yen, but he may
  be lying. Determine whether such a situation is possible, and if it is, find a
  possible set of bills contained in the envelope. Assume that his grandfather
  is rich enough, and the envelope was large enough.
samples: [{"input": "9 45000", "output": "4 0 5\n    \n\nIf the envelope contained 4 10000-yen bills and 5 1000-yen bills, he had 9\nbills and 45000 yen in total. It is also possible that the envelope contained\n9 5000-yen bills, so the output `0 9 0` is also correct.\n\n* * *"}, {"input": "20 196000", "output": "-1 -1 -1\n    \n\nWhen the envelope contained 20 bills in total, the total value would be 200000\nyen if all the bills were 10000-yen bills, and would be at most 195000 yen\notherwise, so it would never be 196000 yen.\n\n* * *"}, {"input": "1000 1234000", "output": "14 27 959\n    \n\nThere are also many other possibilities.\n\n* * *"}, {"input": "2000 20000000", "output": "2000 0 0"}]