HDU 1698 Just a Hook（線段樹模板之區間替換更新，區間求和查詢）

Just a Hook Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 43184    Accepted Submission(s): 20748 Problem Description In the game of DotA, Pud

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