cString.SubString(intindex,intlength)String.SubString(intstart)等效于javascriptstringObject.substr(start,length)stringObject.substr(start) java 

数sqrt缩小范围整除分块1include<cstdio2include<cstdlib3include<cmath4include<cstring5include<string6include<algorithm

离散化和前缀和以前做过，但是不熟，所以借鉴的lyd的代码(不过好像他也没用二分查找,虽然书上这么写的）不过代码中有一些剪枝和为下一步预处理的的操作可能优化了时间，反正62ms过了。。。附上代码:1include<cstdio2include<algorithm3include<cstring

Cstring数组转int数组(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.cnblogs.com%2Fxuqp%2Fp%2F9681142.html)