corresponding modifications in the revised paper

We thank the reviewers for their valuable feedback. As noted in Appendix A, this computation can be amortized across many goal-reaching tasks. Lastly, we agree with R2 that the construction of "good" replay buffers is an We will clarify this in Section 2.3. We will clarify this in Alg. 1. The Atari games fit that mould, as does StarCraft II.