P2882 [USACO07MAR]面对正确的方式Face The Right Way $n<=5000$?枚举翻转长度,顺序模拟就ok了 对于每次翻转,我们可以利用差分的思想,再搞搞前缀和. (输出反了还交,真菜) #include<iostream> #include<cstdio> #include<cstring> using namespace std; #define N 10010 int n,a[N],s[N],p[N],ans,mnd=1e9;…
题目描述 Farmer John has arranged his N (1 ≤ N ≤ 5,000) cows in a row and many of them are facing forward, like good cows. Some of them are facing backward, though, and he needs them all to face forward to make his life perfect. Fortunately, FJ recently…
题目概括 题目描述 Farmer John has arranged his N (1 ≤ N ≤ 5,000) cows in a row and many of them are facing forward, like good cows. Some of them are facing backward, though, and he needs them all to face forward to make his life perfect. Fortunately, FJ rece…
Xcode 的正确打开方式——Debugging 程序员日常开发中有大量时间都会花费在 debug 上,从事 iOS 开发不可避免地需要使用 Xcode.这篇博客就主要介绍了 Xcode 中几种能够大幅提升代码调试效率的方式. “If debugging is the process of removing bugs, then programming must be the process of putting them in.”——Edsger W. Dijkstra 添加条件 有时候我…
