题意 有一个 \(N\) 个点, \(M\) 条边的有向图, 初始有一个机器人在 \(1\) 号点. 每个时刻, 这个机器人会随机选择一条从该点出发地边并通过.当机器人到达点 \(N\) 时, 它就会自动关闭. 然而这个机器人如果在某个时刻到达自己曾经到过的点的话, 它就会爆炸. 因此, 你决定对机器人实施一些命令, 让它在某些时候按照规定的边走, 而非随机选择. 问对机器人最少使用多少条命令可以让它安全到达点 \(N\) . \(N, M \le 10^6\) 题解 十分巧妙的一道好题- 首先…

题意及思路:https://www.cnblogs.com/zjp-shadow/p/9562888.html 这题由于性质特殊,可以用01BFS来进行DP的转移. 代码: #include <bits/stdc++.h> using namespace std; const int maxn = 1000010; vector<int> G[maxn]; deque<int> q; int dp[maxn], deg[maxn]; bool v[maxn]; void…

D. Robot Control time limit per test 6 seconds memory limit per test 256 megabytes input standard input output standard output The boss of the Company of Robot is a cruel man. His motto is "Move forward Or Die!". And that is exactly what his com…

LTE用户文档 (如有不当的地方,欢迎指正!) 20 Uplink Power Control(上行功率控制)   上行功率控制功能默认是开启的.用户可以通过设置布尔属性 ns3::LteUePhy::EnableUplinkPowerControl 为真来关闭该功能.   用户可通过设置布尔属性 ns3::LteUePowerControl::ClosedLoop 以在 Open Loop Power Control(开环功率控制)和 Closed Loop Power Control (闭环…

Reading sources: 1.Johannes Braumann, Sigrid Brell-Cokcan, Adaptive Robot Control (ARC  ) Note: building upon an as of yet unnamed interface from KUKA that utilizes generic UDP packets to communicate with and control KUKA robots. use every network-ca…

原文:与众不同 windows phone (2) - Control(控件) [索引页][源码下载] 与众不同 windows phone (2) - Control(控件) 作者:webabcd介绍与众不同 windows phone 7.5 (sdk 7.1) 之控件 Panorama - 全景图控件 Pivot - 枢轴控件 Map - bing 地图控件 WebBrowser - 内嵌浏览器控件 Other - 其他可用控件 示例1.Panorama 的 DemoPanorama.xa…

Codeforces 828B Black Square(简单题) Description Polycarp has a checkered sheet of paper of size n × m. Polycarp painted some of cells with black, the others remained white. Inspired by Malevich's "Black Square", Polycarp wants to paint minimum pos…

HDU 4289 Control (网络流,最大流) Description You, the head of Department of Security, recently received a top-secret information that a group of terrorists is planning to transport some WMD(Weapon of Mass Destruction)from one city (the source) to another o…

题目描述: C. Producing Snow time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Alice likes snow a lot! Unfortunately, this year's winter is already over, and she can't expect to have any more of i…

题目描述: Maximum Value time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a sequence a consisting of n integers. Find the maximum possible value of (integer remainder of *a**i* divi…