另外翻译题面中n、m的范围错了吧，`n = 40000`且`m = 100000`应该是`n <= 40000`且`m <= 100000`（参照英文题面）
by WAMonster @ 2018-12-13 14:52:57
@[chen_zhe](/space/show?uid=8457) @[老K](/space/show?uid=8943)
by WAMonster @ 2018-12-13 14:53:15
感谢
by Rui_R @ 2021-02-18 13:52:41