题目链接: https://codeforces.com/gym/101987 题意: 有长度为$n$的只包含$B,R$的字符串 有m种关系,每个关系说出三个位置的确切字符 这三个位置的字符最多有一个是错的 数据范围: $1\leq n \leq 5000$ $1\leq m \leq 10000$ 分析: 比如给出1B 2R 3B 那么如果1是R,2必须是R,3必须是B 如果2是B,1必须是R,3必须是B 如果3是R,1必须是B,2必须是R 对这些关系建立2—SAT模型 1B的编号为1,1R的…

题目链接:https://vj.z180.cn/b4aacc08fc7aab6ce14e7baf13816c24?v=1571542994 题目要求n个灯(R,B),给出m组赋值方式,每一组中至少有两个是正确的,问是否能找到一组正确的赋值方式. 2-SAT模板运用强连通分量解决此类真值指派问题. 对于一组赋值: a x b y c z 来说 若a假,则bc为真 若b假,则ac为真 若c假,则ab为真 建边跑SCC(强连通分量即可) #include<bits/stdc++.h> #define…

Problem I. TV ShowTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88926#problem/I Description Charlie is going to take part in one famous TV Show. The show is a single player game. Initially the play…

A. ArielTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100685/problem/A Description King Triton really likes watching sport competitions on TV. But much more Triton likes watching live competitions. So Triton decides to set up…

Problem H. Horrible Truth Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100610 Description In a Famous TV Show “Find Out” there are n characters and only one Horrible Truth. To make the series breathtaking all way long, the sc…

题目链接:https://codeforces.com/gym/101606/problem/L 题解: 在同一条线上的所有蜥蜴,他们的斜率都是相通的,换句话说可以直接通过斜率将蜥蜴分组. 每一组即代表一条直线上的所有蜥蜴,再将这条直线以TV点为分界分成两条射线,这样每条射线上的蜥蜴,按距离TV从近到远,它们的身高排成一个整数序列,对这个序列求最长上升子序列即可. 需要注意的: DP求LIS的话是 $O(n^2)$ 的时间复杂度,是过不了的应该,要用贪心+二分 $O(n \log n)$ 求LI…

问题 K: TV Show Game 时间限制: 1 Sec  内存限制: 512 MB  Special Judge 提交: 51  解决: 10 [提交] [状态] [命题人:admin] 题目描述 Mr. Dajuda, who is famous for a TV show program, occasionally suggests an interesting game for the audience and gives them some gifts as a prize. Th…

layout: post title: (寒假开黑gym)2018 ACM-ICPC, Syrian Collegiate Programming Contest author: "luowentaoaa" catalog: true tags: mathjax: true - codeforces 传送门 付队! 许老师! Hello SCPC 2018! (签到) #include<bits/stdc++.h> using namespace std; typedef…

题目链接 https://codeforces.com/gym/101917 E 题意:给定一个多边形(n个点),然后逆时针旋转A度,然后对多边形进行规约,每个点的x规约到[0,w]范围内,y规约到[0,h]范围内,输出规约后的结果. 解析:求出来 多边形的长和宽,再和w,h比较,对点按比例进行缩放就好了. (多边形旋转其实是绕给出的第一个点旋转,以为是绕原点wa了1发). AC代码 #include <bits/stdc++.h> #define Vector Point using nam…

TV Show Game 题目描述 Mr. Dajuda, who is famous for a TV show program, occasionally suggests an interesting game for the audience and gives them some gifts as a prize. The game he suggested this week can be explained as follows. The k(> 3) lamps on the s…