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🔧 【ABC453 D】Go Straight 復習メモ:BFSの状態管理とTLE対策


Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to

まずは結論から。
この問題は単純なBFSではなく、「直前の移動方向」も状態に含めて管理する必要があった。
また、Pythonで実装する場合、訪問管理に set() を使うとTLEになるため、3次元配列による定数倍の高速化が必須だった。





コンテスト中に考えたこと


幅優先探索(BFS)または深さ優先探索(DFS)で解けそう。
しかし、前回動いた方向に依存するマス(o や... [Weiterlesen]

🔧 【ABC453 D】Go Straight 復習メモ:BFSの状態管理とTLE対策


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