Open Moon-Pie opened 3 years ago
https://blog.moonpie.cf/2021/04/28/mo-bi-wu-si-fan-yan-xi-ti/
前置知识 结论 μ∗1=εφ∗1=idμ∗id=φ\begin{aligned} \mu\ast1 &= \varepsilon\ \varphi\ast1&=\operatorname{id}\ \mu\ast\operatorname{id}&=\varphi\ \end{aligned} μ∗1φ∗1μ∗id=ε=id=φ 数论分块 ∀a,b,c∈Z,⌊
https://blog.moonpie.cf/2021/04/28/mo-bi-wu-si-fan-yan-xi-ti/
前置知识 结论 μ∗1=εφ∗1=idμ∗id=φ\begin{aligned} \mu\ast1 &= \varepsilon\ \varphi\ast1&=\operatorname{id}\ \mu\ast\operatorname{id}&=\varphi\ \end{aligned} μ∗1φ∗1μ∗id=ε=id=φ 数论分块 ∀a,b,c∈Z,⌊