code: def has_been_visited(table, candidate):
      loc = candidate >> 3
      mask = 1 << (candidate & 7)
      return table[loc] & mask
  
imports: import time
  import numba
  from numba.core import types
  import numba.experimental.structref
  import numpy
label_desc: Use image node_id 13 for calling a global function with example usage: has_been_visited(table, candidate) and returns: unknown