@[奔跑吧柯哀](/space/show?uid=52229) 洛谷日报好像有
by 土田共戈 @ 2018-11-02 19:34:22
线段树天下第一
by wky32768 @ 2018-11-02 19:38:39
~~线段树~~
by iMiku @ 2018-11-02 19:46:39
~~分块多好啊~~
by AmlyC @ 2018-11-05 15:54:35
@[BeyondOI](/space/show?uid=87627)
233333333
by 606gtfp6k1 @ 2018-11-10 15:53:24
那个复杂度不对，最好别用
by 142857cs @ 2018-12-05 10:35:53