text: import sys
  sys.setrecursionlimit(5000000)
  
  def Ack(M, N):
      if (not M):
          return( N + 1 )
      if (not N):
          return( Ack(M-1, 1) )
      return( Ack(M-1, Ack(M, N-1)) )
  
  def main():
      NUM = 9
      sys.setrecursionlimit(10000)
      Ack(3, NUM)
  
  main()
  