hdu 1698 Just a Hook 【線段樹成段更新】

題目鏈接：http://acm.hdu.edu.cn/showproblem.php?pid=1698 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 44747    Accepted Submission(s): 21373   Pr

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