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 "recognizing partial cubes in quadratic time"):
  Abstract: We show how to test whether a graph with n vertices and m edges is a partial cube, and if so how to find a distance-preserving embedding of the graph into a hypercube, in the near-optimal time bound O(n^2), improving previous O(nm)-time solutions.

Includes members:
  Member "happy endings for flip graphs":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a proof of the orbit conjecture for flipping edge labelled triangulations")
  Member "optimal angular resolution for face symmetric drawings":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "angle optimization of graphs embedded in the plane")
  Member "isometric diamond subgraphs":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "steinitz theorems for simple orthogonal polyhedra")
  Member "upright quad drawing of st planar learning spaces":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "convex arc drawings of pseudolines")
  Member "the lattice dimension of a graph":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "steinitz theorems for simple orthogonal polyhedra")
  Member "algorithms for drawing media":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "drawing arrangement graphs in small grids or how to play planarity")
  Member "algorithms for media":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "algorithms for drawing media")

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)