Partial Sum Accepted : Submit : Time Limit : MS Memory Limit : KB Partial Sum Bobo has a integer sequence a1,a2,…,an of length n. Each time, he selects two ends ≤l<r≤n and add |∑rj=l+1aj|−C into a counter which is zero initially. He repeats the selec
题目传送门:POJ 1269 Intersecting Lines Description We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three ways: 1) no intersection because they are parallel, 2) intersect in
Anton has a positive integer n, however, it quite looks like a mess, so he wants to make it beautiful after k swaps of digits. Let the decimal representation of n as (x1x2⋯xm)10 satisfying that 1≤x1≤9, 0≤xi≤9 (2≤i≤m), which means n=∑mi=1xi10m−i. In e
IOU 选框和真实框重叠部分占两个总框并集的比例 IOU 召回率:表示在预测为的正类中,有多少正类被预测为正类 https://blog.csdn.net/qq_36653505/article/details/82709281?depth_1-utm_source=distribute.pc_relevant.none-task&utm_source=distribute.pc_relevant.none-task enter description here
纵骑横飞 章仕烜 首先我们来看一下 DataOutputStream /** * A data output stream lets an application write primitive Java data * types to an output stream in a portable way. An application can * then use a data input stream to read the data back in. * * @auth
源代码下载地址为:www.clang.cc 阅读学习了源代码,并做了简单的注释和修改,里面只用了链表数据结构,非常适合C语言入门者学习阅读. 程序可在VS2013下编译运行. #include<stdio.h> #include<time.h> #include<windows.h> #include<stdlib.h> #define U 1 #define D 2 #define L 3 #define R 4 //蛇的状态,U:上 :D:下:L:左 R
什么是HTML HTML 是用来描述网页的一种语言. HTML 指的是超文本标记语言: Hyper Text Markup Language HTML 不是一种编程语言,而是一种标记语言 标记语言是一套标记标签 (markup tag) HTML 使用标记标签来描述网页 HTML 文档包含了HTML 标签及文本内容 HTML文档也叫做 web 页面 html结构: <!DOCTYPE html> <html lang="en"> <head> <
就是因为他们的不同,造成我一小天的麻烦,就是取得不了正确的结果,后来经原同事提醒,终于找到了原因,但是还有点没看懂,所以又找了个网上的经验,贴进来,以备以后再查. --简单的存储过程 create proc mypro3 @bookname varchar(50) as begin if (select price from book where book_name like @bookname) >= 29 return 2 else return 1 end --简单的调用 declare