human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "faster sorting networks for 17 19 and 20 inputs"):
  Abstract: We present new parallel sorting networks for 17 to 20 inputs. For 17;19; and 20 inputs these new networks are faster (i.e., they require less computation steps) than the previously known best networks. There- fore, we improve upon the known upper bounds for minimal depth sort- ing networks on 17;19; and 20 channels. The networks were obtained using a combination of hand-crafted first layers and a SAT encoding of sorting networks.

Includes members:
  Member "the quest for optimal sorting networks efficient generation of two layer prefixes":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "enhanced optimization with composite objectives and novelty selection")
  Member "optimal sorting networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "optimal metastability containing sorting via parallel prefix computation")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DS(Data Structures and Algorithms)