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[TJOI2017]异或和 | CTime_Pup_314 #7

Open CTP314 opened 5 years ago

CTP314 commented 5 years ago

https://ctp314.github.io/2019/05/06/TJOI2017-%E5%BC%82%E6%88%96%E5%92%8C/

P3760 [TJOI2017]异或和 连续和的异或值 题目实际要求出 $$\begin{aligned}ans\ =\ \oplus \sum{i=1}^n\sum{j=0}^{i-1}sum_i-sum_j\end{aligned}$$ 然后,我看了一下二进制加法器后直接弃疗