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
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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