A. Case of the Zeros and Ones time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing…

time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing zeros and ones. Once he thought ab…

A. Case of the Zeros and Ones time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing…

A. Case of the Zeros and Ones Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/556/problem/A Description Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing zeros an…

题目传送门 /* 找规律/贪心:ans = n - 01匹配的总数,水 */ #include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <cmath> using namespace std; ; const int INF = 0x3f3f3f3f; char s[MAXN]; int main(void) //Codeforce…

A. Case of the Zeros and Ones time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing…

A. Case of the Zeros and Ones Description Andrewid the Android is a galaxy-famous detective. In his free time he likes to think about strings containing zeros and ones. Once he thought about a string of length n consisting of zeroes and ones. Conside…

今天无意中碰见了   case expressions must be constant expressions 的问题 写了一个 switch(item.getItemId()) { case R.id.action_settings: Toast.makeText(this ,"action_settings" ,Toast.LENGTH_LONG).show(); System.out.println("onOptionsItemSelected"); bre…

SQL Server知识点回忆篇(四):case函数,索引,子查询,分页查询,视图,存储过程 1. CASE函数(相当于C#中的Switch) then '未成年人' else '成年人' end from tbUsers 2. 索引 index 聚集索引(物理):一个表只能有一个.创建一个表时,如果有主键,主键会自动创建聚集索引. 非聚集索引(逻辑):一个表可以有多个. 增加索引后,会增加额外的存储空间开销,降低了增加新纪录.修改.删除的效率. 建索引:索引应该建在经常查询时用到的列上,查询时…

一:case表达式的用法 1.SQL中的case表达式的作用是用来对"某个变量"进行某种转化,通常在select字句中使用,举个例子: 不能看出,case表达式很像我们的if else的作用,在发现为真的 WHEN 子句时,CASE 表达式的真假值判断就会中止,而剩余的 WHEN 子句会被忽略.case表达式有两种写法: -- 简单CASE 表达式 CASE sex   WHEN '1' THEN '男'   WHEN '2' THEN '女' ELSE '其他' END -- 搜索C…