BZOJ2138 stone [Hall定理/线段树]
LOJ6062「2017 山东一轮集训 Day2」Pair [Hall定理/线段树]
NOIP2017 逛公园&列队 [DP/最短路/动态开点线段树]
LP3313 [SDOI2014]旅行 [动态开点线段树]
LP3332 [ZJOI2013]K大数查询 [整体二分]
LP2745 [USACO5.3]窗体面积Window Area [矩形面积并/模拟]
[SDOI2017] 树点涂色 [LCT/线段树/LCA]