链接:https://www.nowcoder.com/acm/contest/147/H 来源:牛客网
Niuniu has learned prefix sum and he found an interesting about prefix sum.
Let’s consider (k1) arrays a[i] (0 < i < k) The index of a[i] starts from 1. a[i] is a…
前置知识
(1)毕达哥拉斯定理: sin 2 α cos 2 β 1 \sin^2\alpha\cos^2\beta1 sin2αcos2β1
(2)诱导公式: sin ( 2 k π α ) sin α , cos ( 2 k π α ) cos α , ( k ∈ Z )…
2021.10.13
一、三角恒等式 基本恒等公式 t a n ( θ ) s i n ( θ ) c o s ( θ ) tan(\theta){sin(\theta)\over cos(\theta)} tan(θ)cos(θ)sin(θ) 毕达哥拉斯定理公式(勾股定理) a 2 b 2 c 2 a^2b^2c^2 a2b2c2 s i n 2 ( α ) c o s 2 …
报错 Incompatible JVM version 1.8.0_271 of the VM is not suitable for this product.Version:11 or greater is required. 打开eclipse安装位置 打开eclipse.ini,添加jdk路径 -vm E:\javaJDK\Java\jdk-15.0.1\bin
转自:https://blog.csdn.net/sinat_35938012/article/details/76652755 A Java Runtime Environment(JRE) or java Development Kit(JDK) must be available in order to run Eclipse. No java virtual machine was found after searching the folloing locations; …
大家都知道Eclipse是开发源代码平台,在使用中也难免会遇到一些错误问题,有用户在更换jdk版本或配置较多个jdk版本原因,在打开Eclipse时提示错误信息,failed to create the java virtual machine(如下图所示)导致无法正常打开&…