| Rank | Solved | A | B | C | D | E | F | G | H | I | J |
|---|---|---|---|---|---|---|---|---|---|---|---|
| --/-- | 9/10 | O | O | O | O | O | . | O | O | O | O |
O: 当场通过
Ø: 赛后通过
.: 尚未通过
A Automatic Judge
solved by chelly
chelly's solution
B Building Shops
solved by chelly
chelly's solution
C Coprime Sequence
solved by ch
ch's solution
D Deleting Edges
solved by chelly
chelly's solution
E Easy Summation
solved by chelly
chelly's solution
F Forgiveness
unsolved
G Graph Theory
solved by chelly
chelly's solution
H Happy Necklace
solved by ch
ch's solution
I Innumerable Ancestors
solved by chelly
chelly's solution
考虑对于每组询问，把虚树建出来，在虚树上DP
J Judicious Strategy
solved by ch
ch's solution