text: import numpy as np
  from envs.ant_like_env import AntLikeEnv
  
  
  class Env(AntLikeEnv):
      def __init__(self, xml):
          super(Env, self).__init__(xml)
  
      def get_reward(self, a):
          survive_reward = 1.0
          self.do_simulation(a, self.frame_skip)
  
          return survive_reward
  
     