text: hidden_dim = 64
  GAMMA = 0.99
  time_step = 0
  max_timestep = 500000
  n_episode = 1000000
  i_episode = 0
  capacity = 100000
  batch_size = 64
  n_epoch = 5
  epsilon = 0.9
  tau = 0.96
  test_flag = 0
  comm_flag = 1
  range_=3