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      "Scheduling and related problems"
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    "number": 4,
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    "title": "Mystery Shopper"
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    "number": 5,
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    "category": [
      "Scheduling and related problems"
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    "number": 10,
    "proposer": [
      "Warwick Harvey"
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      "Scheduling and related problems"
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    "number": 11,
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      "Scheduling and related problems"
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    "number": 13,
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    "category": [
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    "number": 16,
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      "Partitioning and related problems"
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    "number": 18,
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    "number": 19,
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    "title": "Magic Squares and Sequences"
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    "category": [
      "Scheduling and related problems"
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    "number": 20,
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    "number": 22,
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      "Suniel Curtis"
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    "number": 25,
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    "title": "Lam's Problem"
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    "number": 26,
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    "title": "Sports Tournament Scheduling"
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    "category": [
      "Games and puzzles"
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    "number": 27,
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      "Ian Gent"
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    "title": "Alien Tiles Problem"
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    "id": "prob028",
    "number": 28,
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    "title": "Balanced Incomplete Block Designs"
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    "category": [
      "Scheduling and related problems"
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    "number": 30,
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      "Toby Walsh"
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    "title": "Balanced Academic Curriculum Problem (BACP)"
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    "category": [
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    "number": 31,
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    "category": [
      "Games and puzzles"
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    "number": 32,
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    "title": "Maximum density still life"
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    "number": 33,
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    "title": "Word Design for DNA Computing on Surfaces"
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    "number": 34,
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    "title": "Warehouse Location Problem"
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    "category": [
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    "id": "prob035",
    "number": 35,
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      "Ian Miguel"
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    "category": [
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    "id": "prob036",
    "number": 36,
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      "Ian Miguel"
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    "title": "Fixed Length Error Correcting Codes"
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      "Games and puzzles"
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    "number": 37,
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      "Chris Jefferson",
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      "Ian Miguel",
      "Armagan Tarim"
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    "title": "Peg Solitaire"
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    "category": [
      "Design and configuration",
      "Bin packing"
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    "id": "prob038",
    "number": 38,
    "proposer": [
      "Ian Miguel"
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    "title": "Steel Mill Slab Design"
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      "Scheduling and related problems"
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    "number": 39,
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      "Barbara Smith"
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    "title": "The Rehearsal Problem"
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    "category": [
      "Scheduling and related problems",
      "Bin packing"
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    "id": "prob040",
    "number": 40,
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      "Ian Miguel",
      "Toby Walsh"
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    "category": [
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    "number": 42,
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    "number": 43,
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    "number": 44,
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    "number": 45,
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      "Evgeny Selensky"
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    "number": 46,
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      "Roie Zivan",
      "Amnon Meisels"
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    "number": 47,
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      "David A. Burke",
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      "Ben Lowe"
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    "number": 48,
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      "Kenneth N. Brown"
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    "number": 49,
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      "Daniel Diaz"
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      "Combinatorial mathematics"
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    "number": 50,
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      "Patrick Prosser"
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    "category": [
      "Bin packing",
      "Partitioning and related problems"
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    "id": "prob051",
    "number": 51,
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      "Pierre Schaus"
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    "title": "Tank Allocation"
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    "number": 52,
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      "Peter Stuckey"
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    "title": "Extremal Graphs with Small Girth"
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    "number": 53,
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      "Karen Petrie"
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    "title": "Graceful Graphs"
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    "category": [
      "Games and puzzles"
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    "number": 54,
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    "id": "prob055",
    "number": 55,
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      "Peter Nightingale"
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    "title": "Equidistant Frequency Permutation Arrays"
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    "category": [
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    "id": "prob056",
    "number": 56,
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      "Peter Nightingale"
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    "category": [
      "Games and puzzles"
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    "number": 57,
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      "Peter Nightingale"
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    "title": "Killer Sudoku"
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    "category": [
      "Scheduling and related problems"
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    "id": "prob058",
    "number": 58,
    "proposer": [
      "Vinasetan Ratheil Houndji",
      "Pierre Schaus",
      "Laurence Wolsey",
      "Yves Deville"
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    "title": "Discrete Lot Sizing Problem"
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    "category": [
      "Scheduling and related problems"
    ],
    "id": "prob059",
    "number": 59,
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      "Helmut Simonis",
      "Barry O\u2019Sullivan",
      "Deepak Mehta",
      "Barry Hurley",
      "Milan De Cauwer"
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    "title": "Energy-Cost Aware Scheduling"
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    "category": [
      "Scheduling and related problems"
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    "id": "prob060",
    "number": 60,
    "proposer": [
      "Vincent Armant"
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    "title": "Ridesharing"
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    "category": [
      "Scheduling and related problems"
    ],
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    "number": 61,
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      "Peter Nightingale",
      "Emir Demirovi\u0107"
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    "title": "Resource-Constrained Project Scheduling Problem (RCPSP)"
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    "category": [
      "TimeTabling"
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    "number": 62,
    "proposer": [
      "Helmut Simonis"
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    "category": [
      "Design and configuration"
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    "id": "prob063",
    "number": 63,
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      "Patrick Prosser"
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    "category": [
      "Scheduling and related problems"
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    "number": 64,
    "proposer": [
      "Jean-No\u00ebl Monette"
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    "title": "Generalised Balanced Academic Curriculum Problem"
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    "category": [
      "Design and configuration"
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    "number": 65,
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    "number": 68,
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    "number": 69,
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    "number": 70,
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      "Barry O'Sullivan"
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    "number": 72,
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    "number": 73,
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      "Morten Mossige"
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    "category": [
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    "number": 74,
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    "number": 75,
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    "number": 76,
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      "Serdar Kad\u0131o\u011flu",
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    "number": 77,
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    "category": [
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    "id": "prob078",
    "number": 78,
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      "Pierre Schaus"
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    "id": "prob079",
    "number": 79,
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    "category": [
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    "id": "prob080",
    "number": 80,
    "proposer": [
      "Ian Gent"
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    "category": [
      "Games and puzzles"
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    "id": "prob081",
    "number": 81,
    "proposer": [
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      "Scheduling and related problems"
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    "id": "prob082",
    "number": 82,
    "proposer": [
      "Charles Thomas",
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      "Louis-Martin Rousseau"
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    "category": [
      "Design and configuration",
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    "id": "prob083",
    "number": 83,
    "proposer": [
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    "number": 84,
    "proposer": [
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    "id": "prob085",
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    "id": "prob086",
    "number": 86,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
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    "title": "Capacitated Vehicle Routing Problem"
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    "category": [
      "Scheduling and related problems"
    ],
    "id": "prob087",
    "number": 87,
    "proposer": [
      "Sven L\u00f6ffler, Ilja Becker, Petra Hofstedt"
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    "title": "Rotating Rostering Problem"
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    "category": [
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    "id": "prob088",
    "number": 88,
    "proposer": [
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    "category": [
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    "number": 89,
    "proposer": [
      "George Assaf, Sven L\u00f6ffler, and Petra Hofstedt"
    ],
    "title": "Medical Appointment Scheduling Problem (MASP)"
  },
  "prob090": {
    "category": [
      "Bin Packing"
    ],
    "id": "prob090",
    "number": 90,
    "proposer": [
      "David Bogdan-Nicolae"
    ],
    "title": "Wordpress application deployment in the Cloud"
  },
  "prob091": {
    "category": [
      "Scheduling and related problems"
    ],
    "id": "prob091",
    "number": 91,
    "proposer": [
      "George Assaf, Petra Hofstedt, Sven L\u00f6ffler"
    ],
    "title": "Medical Appointment Sequence Scheduling Problem (MASSP)"
  },
  "prob110": {
    "category": [
      "Combinatorial mathematics",
      "Games and puzzles"
    ],
    "id": "prob110",
    "number": 110,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
    ],
    "title": "Peaceably Co-existing Armies of Queens"
  },
  "prob115": {
    "category": [
      "Unclassified"
    ],
    "id": "prob115",
    "number": 115,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
    ],
    "title": "Tail Assignment"
  },
  "prob116": {
    "category": [
      "Unclassified"
    ],
    "id": "prob116",
    "number": 116,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
    ],
    "title": "Vellino's Problem"
  },
  "prob131": {
    "category": [
      "Unclassified"
    ],
    "id": "prob131",
    "number": 131,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn",
      "Zeynep Kiziltan"
    ],
    "title": "Production Line Sequencing"
  },
  "prob132": {
    "category": [
      "Unclassified"
    ],
    "id": "prob132",
    "number": 132,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
    ],
    "title": "A Layout Problem"
  },
  "prob133": {
    "category": [
      "Combinatorial mathematics"
    ],
    "id": "prob133",
    "number": 133,
    "proposer": [
      "\u00d6zg\u00fcr Akg\u00fcn"
    ],
    "title": "Knapsack Problem"
  }
}