题目传送门 /* 题意:程序从1到n版本升级,正版+正版->正版,正版+盗版->盗版,盗版+盗版->盗版 正版+破解版->正版,盗版+破解版->盗版 DP:每种情况考虑一遍,递推就行了 注意:开long long */ #include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <cmath> using…

1741. Communication Fiend Time limit: 1.0 second Memory limit: 64 MB Kolya has returned from a summer camp and now he's a real communication fiend. He spends all his free time on the Web chatting with his friends via ICQ. However, lately the protocol…

Description Kolya has returned from a summer camp and now he's a real communication fiend. He spends all his free time on the Web chatting with his friends via ICQ. However, lately the protocol of this service was changed once again, and Kolya's clie…

URAL 1741 思路: dp 状态:dp[i][1]表示到第i个版本为正版的最少流量花费 dp[i][0]表示到第i个版本为盗版的最少流量花费 初始状态:dp[1][0]=dp[0][0]=0 目标状态:min(dp[n][0],dp[n][1]) 状态转移:见代码,注意如果是cracked版本,如果原来是盗版,转移后还是盗版 代码: #include<bits/stdc++.h> using namespace std; #define ll long long #define mem(…

刷个简单的DP缓缓心情 1A #include <iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<stdlib.h> #include<vector> using namespace std; #define N 10010 vector<int>q[N]; #define LL __int64 #define INF 1e…

列表: URAL 1225 Flags URAL 1009 K-based Numbers URAL 1119 Metro URAL 1146 Maximum Sum URAL 1203 Scientific Conference URAL 1353 Milliard Vasya's Function URAL 1260 Nudnik Photographer URAL 1012 K-based Numbers. Version 2 URAL 1073 Square Country URAL 1…

D - Palindrome Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice URAL 1297 Description The “U.S. Robots” HQ has just received a rather alarming anonymous letter. It states that the agent from the comp…

1297. Palindrome Time limit: 1.0 secondMemory limit: 64 MB The “U.S. Robots” HQ has just received a rather alarming anonymous letter. It states that the agent from the competing «Robots Unlimited» has infiltrated into “U.S. Robotics”. «U.S. Robots» s…

POJ 1502 MPI Maelstrom / UVA 432 MPI Maelstrom / SCU 1068 MPI Maelstrom / UVALive 5398 MPI Maelstrom /ZOJ 1291 MPI Maelstrom (最短路径) Description BIT has recently taken delivery of their new supercomputer, a 32 processor Apollo Odyssey distributed shar…

解决单源最短路径问题(Single Source Shortest Paths Problem)的算法包括: Dijkstra 单源最短路径算法:时间复杂度为 O(E + VlogV),要求权值非负: Bellman-Ford 单源最短路径算法:时间复杂度为 O(VE),适用于带负权值情况: 对于全源最短路径问题(All-Pairs Shortest Paths Problem),可以认为是单源最短路径问题的推广,即分别以每个顶点作为源顶点并求其至其它顶点的最短距离.例如,对每个顶点应用 Bel…