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This is
Aoki Umi

I will never regret my choice
Even I can't bring back anything
This trip is worth traveling

点分治学习

2018-10-19
OI, Algorithm

树上差分

2018-10-14
OI, Algorithm, Tree

树链剖分板子（联合线段树）

2018-08-25
OI, Algorithm, Tree

树剖应用

2018-08-14
OI, Algorithm, Tree

神题记录——运输计划（二分+树上差分+lca）

2018-05-26
OI, Algorithm, Tree