Dash Speed Online Judge:NOIP2016十联测,Claris#2 T3 Label:好题,分治,并查集按秩合并,LCA 题目描述 比特山是比特镇的飙车圣地.在比特山上一共有 n 个广场,编号依次为 1 到 n,这些广场之间通过 n − 1 条双向车道直接或间接地连接在一起,形成了一棵树的结构. 因为每条车道的修建时间以及建筑材料都不尽相同,所以可以用两个数字 li, ri 量化地表示一条车道 的承受区间,只有当汽车以不小于 li 且不大于 ri 的速度经过这条车道时,才不
思路: Kruskal求最大生成树+倍增LCA // by SiriusRen #include <cstdio> #include <cstring> #include <algorithm> using namespace std; #define N 105000 int n,m,tot=0,xx,yy,zz,ans; int first[N],v[N*10],next[N*10],w[N*10],f[N],dep[N],fa[N][20],minn[N][20]
Rank of Tetris Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 9267 Accepted Submission(s): 2668 Problem Description 自从Lele开发了Rating系统,他的Tetris事业更是如虎添翼,不久他遍把这个游戏推向了全球. 为了更好的符合那些爱好者的喜好,Lele又想
J - How Many Tables Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Description Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he needs at least. You
[1274] The battle of Red Cliff 时间限制: 1000 ms 内存限制: 65535 K 问题描述 Zero loves palying Sanguo game very much, The battle of Red Cliff is one of scenes. Now he will put a fire to one of ships. Some ships are connected, some are not.Now, zero puts his fire
More is better Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 327680/102400 K (Java/Others)Total Submission(s): 25168 Accepted Submission(s): 9045 Problem Description Mr Wang wants some boys to help him with a project. Because the project