HBC17339Chiaki Sequence Reloaded题解 a_n=begin{cases}0 & n = 1 \ a_{lfloor frac{n}{2} rfloor} + (-1 ^{frac{n(n+1 }{2}} & n ge 2end{cases}... 算法基础篇 2023-11-22 60 #HBC17339Chiaki Sequence Reloaded题解
