Blog of RuSun

$\begin{matrix} One Problem Is Difficult \\ Because You {Don}^{'} t Know \\ Why It Is Diffucult \end{matrix}$

拓扑排序标签

2022

06-27

CF915D Almost Acyclic Graph

04-14

CF1131D Gourmet choice

2021

11-19

P2999 [USACO10NOV]Chocolate Milk S

11-18

P2017 [USACO09DEC]Dizzy Cows G

11-17

P3275 [SCOI2011]糖果