`if (l<=tr[p].l&&tr[p].r>=r) return tr[p].mx;`->`if (l<=tr[p].l&&tr[p].r<=r) return tr[p].mx;`
by c20231020 @ 2023-01-05 20:49:16
@[HardsoftCyril](/user/494192)
by c20231020 @ 2023-01-05 20:49:37
@[c20231020](/user/561785) 谢谢大佬！想知道为什么。。。
by ChickenDrinkingMilk @ 2023-01-05 20:51:21
@[HardsoftCyril](/user/494192) 线段树表示区间被包含在查询区间里时才直接返回。
by c20231020 @ 2023-01-05 20:53:17
@[c20231020](/user/561785) wssb,谢谢大佬！！！ 此帖终
by ChickenDrinkingMilk @ 2023-01-05 20:54:32
@[HardsoftCyril](/user/494192) ~~你这个b 都卷到线段树了（~~
by AFwhcing @ 2023-01-05 21:09:30