B. Psychos in a Line Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/319/B Description There are n psychos standing in a line. Each psycho is assigned a unique integer from 1 to n. At each step every psycho who h…

D. Psychos in a Line time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n psychos standing in a line. Each psycho is assigned a unique integer from 1 to n. At each step every psycho…

There are n psychos standing in a line. Each psycho is assigned a unique integer from 1 to n. At each step every psycho who has an id greater than the psycho to his right (if exists) kills his right neighbor in the line. Note that a psycho might kill…

Psychos in a Line CodeForces - 319B There are n psychos standing in a line. Each psycho is assigned a unique integer from 1 to n. At each step every psycho who has an id greater than the psycho to his right (if exists) kills his right neighbor in the…

Codeforce 319 B. Psychos in a Line 解析(思維.單調棧) 今天我們來看看CF319B 題目連結 題目 給一個數列,如果相鄰兩數,左邊大於右邊,那麼就可以殺死右邊的數字(被殺死的數字在當前一輪也可以殺右邊的數字) 求幾輪以後就沒有數字會自相殘殺了? 前言 第一眼看到就感覺會和單調棧有關,但是實在經驗不足,最後思緒被拉跑到找遞增和遞減數列了... 想法 我們都知道,單調棧最一開始就是拿來找一個元素往左或往右的,第一個比元素本身大或小的元素. 但這題還需要我們利用單調…

维护一个单调下降的队列. 对于每一个人,只需要找到在他前面且离他最近的可以杀掉他的人即可. #include <cstdio> #include <vector> #include <algorithm> #include <cstring> using namespace std; #define N 100005 vector<int> v; int f[N], n, t, cnt; int main() { scanf("%d&q…

Codeforces Round #189 (Div. 1) B:http://codeforces.com/problemset/problem/319/B 题意:每一ROUND如果某个人的数字大于他右边的人,他就会干掉右边的人,一个人可以同时干掉别人和被干掉,问要多少ROUND结束后才不会死人. 题解:第一次接触传说中的单调队列,自己觉得这一题还是dp占主要部分.还是那就话,dp就是一种艺术.f[i]表示的是被第几次杀死,f[i]=f[j]+1;(j表示i左边的比i小的数),不过这里处理dp…

A. Magic Numbers 不能出现连续的3个4,以及1.4以外的数字. B. Ping-Pong (Easy Version) 暴力. C. Malek Dance Club 考虑\(x\)二进制每一位1,假设位置为\(p\),则前\(p-1\)位都需要一样,否则之前就计算了贡献,那么后面的位可以任取. D. Psychos in a Line 链表模拟. E. Kalila and Dimna in the Logging Industry 因为\(b_n=0\),所以用最小代价砍倒第…

出现场景:当点击"分类"再返回"首页"时,发生error退出   BUG描述:Caused by: java.lang.IllegalArgumentException: Binary XML file line #23: Duplicate id 0x7f0d0054, tag null, or parent id 0xffffffff with another fragment for com.example.sxq123.iljmall.FragmentCat…

启动tomcat, 出现, ( 之前都是好好的... ) [lk ] ERROR [08-12 15:10:02] [main] org.springframework.web.context.ContextLoader.initWebApplicationContext(215) | Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean…