rank | solved | A | B | C | D | E | F | G | H | I | J |
---|---|---|---|---|---|---|---|---|---|---|---|
100 | 6 | . | O | Ø | O | O | O | . | O | . | ! |
B
Solved by Henry.
斐波那契数列上分治,
C
UpSolved by XLor.
前后加字符,求每次操作后周期的个数。
注意到长度为周期 $x$ 的贡献时间为 $x$ 开始的一段连续区间,二分出这个区间,区间加即可。
D
Solved by Henry.
CRT。
E
Solved by Henry.
分形。
F
Solved by Henry.
枚举。
H
Solved by XLor.
判图同构。
J
UnSolved by XLor
斜率优化,分治优化,wqs 二分。