A. Tennis Tournament time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A tennis tournament with n participants is running. The participants are playing by an olympic system, so the winners mo…

Rock-Paper-Scissors TournamentTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2178 Accepted Submission(s): 693 Problem DescriptionRock-Paper-Scissors is game for two players, A and B, who each choo…

CF 628A 题目大意:给定n,b,p,其中n为进行比赛的人数,b为每场进行比赛的每一位运动员需要的水的数量, p为整个赛程提供给每位运动员的毛巾数量, 每次在剩余的n人数中,挑选2^k=m(m <=n)个人进行比赛,剩余的n-m个人直接晋级, 直至只剩一人为止,问总共需要的水的数量和毛巾的数量 解题思路:毛巾数很简单: n*p即可 水的数量:1,2,4,8,16,32,64,128,256,512,提前打成一个表, 根据当前剩余的人数n在表中二分查找最大的小于等于n的数,结果即为本次进行比赛…

1218. Episode N-th: The Jedi Tournament Time limit: 1.0 secondMemory limit: 64 MB Decided several Jedi Knights to organize a tournament once. To know, accumulates who the largest amount of Force. Brought each Jedi his lightsaber with him to the tourn…

Episode N-th: The Jedi Tournament Time limit: 1.0 secondMemory limit: 64 MB Decided several Jedi Knights to organize a tournament once. To know, accumulates who the largest amount of Force. Brought each Jedi his lightsaber with him to the tournament.…

题目链接: 题目 E. Another Sith Tournament time limit per test2.5 seconds memory limit per test256 megabytes inputstandard input outputstandard output 问题描述 The rules of Sith Tournament are well known to everyone. n Sith take part in the Tournament. The Tour…

 Knight Tournament time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights…

假设个体(individual)用\(h_i\)表示,该个体的适应度(fitness)为\(Fitness(h_i)\),被选择的概率为\(P(h_i)\). 另外假设种群(population)的个体总数为\(N\). I. Fitness Selection 该方法也叫 Roulette Wheel Selection(轮盘赌博选择),种群中的个体被选中的概率与个体相应的适应度函数的值成正比. \[P(h_i)=\frac{Fitness(h_i)}{\sum_{j=1}^N Fitness…

[CF913F]Strongly Connected Tournament 题意:有n个人进行如下锦标赛: 1.所有人都和所有其他的人进行一场比赛,其中标号为i的人打赢标号为j的人(i<j)的概率为$p=a\over b$.2.经过过程1后我们相当于得到了一张竞赛图,将图中所有强联通分量缩到一起,可以得到一个链,然后对每个大小>1的强联通分量重复过程1.3.当没有大小>1的强连通分量时锦标赛结束. 现在给出n,a,b,求期望比赛的场数. $n\le 2000,a<b\le 1000…

[CF878C]Tournament 题意:有k个项目,n个运动员,第i个运动员的第j个项目的能力值为aij.一场比赛可以通过如下方式进行: 每次选出2个人和一个项目,该项目能力值高者获胜,败者被淘汰,胜者继续比赛.最后一个人是冠军. 在一场比赛中,你可以任意安排比赛顺序,任意选择每次的参赛者和项目,现在想知道的是有多少人可能成为最后的冠军. 为了加大难度,一共有n次询问,第i次询问是前i个人进行比赛,问最终由多少人可能成为总冠军. n<=50000,k<=10,aij<=10^9 题解…

Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights in the kingdom and they in turn agreed to participate in this grand event. As for you, you're just a simple peasant. There's no s…

E. Another Sith Tournament 题目连接: http://www.codeforces.com/contest/678/problem/E Description The rules of Sith Tournament are well known to everyone. n Sith take part in the Tournament. The Tournament starts with the random choice of two Sith who wil…

[题目]F. Strongly Connected Tournament [题意]给定n个点(游戏者),每轮游戏进行下列操作: 1.每对游戏者i和j(i<j)进行一场游戏,有p的概率i赢j(反之j赢i),连边从赢者向输者,从而得到一个有向完全图. 2.对于其中点数>1的强连通分量再次进行过程1,直至不存在点数>1的强连通分量为止. 给定n和p,求游戏总场次的期望.2<=n<=2000. [算法]数学概率,期望DP [题解]答案只和点数有关,设ans(n)表示n个点游戏总场次的…

题目链接 Problem Description Rock-Paper-Scissors is game for two players, A and B, who each choose, independently of the other, one of rock, paper, or scissors. A player chosing paper wins over a player chosing rock; a player chosing scissors wins over a…

竞赛图(tournament)学习笔记 现在只是知道几个简单的性质... 竞赛图也叫有向完全图. 其实就是无向完全图的边有了方向. ​ 有一个很有趣的性质就是:一个tournament要么没有环,如果有环,那么必然有一个三元环.当然,tournament一定没有自环和二元环. ​ 证明的话,开始吧,, ​ 首先我们假定当前的tournament存在一个N元环,那么我们设A,B,C为这个N元环上连续的三个点,那么就会存在AB和BC两条边,又因为是竞赛图,所以一定会存在AC或者CA两者中的一条边.…

A. Tennis Tournament 题目连接: http://www.codeforces.com/contest/628/problem/A Description A tennis tournament with n participants is running. The participants are playing by an olympic system, so the winners move on and the losers drop out. The tourname…

Description A Swiss-system tournament is a tournament which uses a non-elimination format. The first tournament of this type was a chess tournament in Zurich in 1895, hence the name "Swiss system". The tournament will be held based on following…

A. Vicious Keyboard time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Tonio has a keyboard with only two letters, "V" and "K". One day, he has typed out a string s with only t…

Discription Farmer John is hosting a tennis tournament with his n cows. Each cow has a skill level si, and no two cows having the same skill level. Every cow plays every other cow exactly once in the tournament, and each cow beats every cow with skil…

Controlled Tournament 题意 n 名选手进行淘汰赛,R[i][j] = 1 表示 i 能胜过 j.要求通过安排淘汰赛使得,m 选手获得最终胜利,问使得比赛数最少的方案数. 分析 设 f(i, h, S) 表示 i 选手获胜 比赛 h 场 参赛选手集合为 S 的比赛方案有多少种. 那么状态转移就是 \(f(i, h, S) = \sum{f(i, h - 1, S') * f(j, h - 1, S - S')}\),满足 i 能胜过 j,\(i \in S'\),\(j \i…

Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights in the kingdom and they in turn agreed to participate in this grand event. As for you, you're just a simple peasant. There's no s…

Knight Tournament Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights in the kingdom and they in turn agreed to participate in this grand event. As for you, you're just a simple pea…

Problem K — limit 1 second Tournament Wins 这个题就是有2^n队伍,他现在的实力水平是第k位,采用的是淘汰制 问一下你他的胜场数的期望 这人能 win>=i 场的概率就是和它同一个半区的 2^i 个人都比他弱啊 所以去枚举这个2^i,E(X)=\sum P(X>=i) 直接搞一下就好了 我每次的概率都在前一次的算,这样避免了多次枚举,之后求下差就好,所以这个算法是2^n的 #include <bits/stdc++.h> using nam…

先上题目: Problem G: SpaceRecon Tournament SpaceRecon, the hottest game of 2011, is a real-time strategy thriller where players control your armies to destroy their opponent. Players may choose from one of the three available races -- Xurks (biological),…

Problem description Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights in the kingdom and they in turn agreed to participate in this grand event. As for you, you're just a simple p…

Description Hooray! Berl II, the king of Berland is making a knight tournament. The king has already sent the message to all knights in the kingdom and they in turn agreed to participate in this grand event. As for you, you're just a simple peasant.…

Tournament Chart 题目描述 In 21XX, an annual programming contest, Japan Algorithmist GrandPrix (JAG) has become one of the most popular mind sports events. JAG is conducted as a knockout tournament. This year, N contestants will compete in JAG. A tournam…

Codeforces 678E. Another Sith Tournament 题意: n(n<=18)个人打擂台赛,给定任意两人对决的胜负概率,比赛规则:可指定一人作为最开始的擂主,每次可指定台下的人替代失败的人上去对决,失败的人出局.问在最优决策下,第一个人留到最后的概率. 思路: 首先要观察到这一性质:一号玩家要想取得最终胜利的概率尽可能大,一定要把他安排在最后上场,只打一次.获胜概率与当前擂主以及台下的人有关,所以这个是状态,容易想到需要用二进制表示来压缩状态. 然而想到这些还是不好做…

Tournament Chart 传送门:链接  来源:UPC10889 题目描述 In 21XX, an annual programming contest, Japan Algorithmist GrandPrix (JAG) has become one of the most popular mind sports events. JAG is conducted as a knockout tournament. This year, N contestants will compe…

脑子又卡了...来一发set的,STL真心不熟. #include <stdio.h> #include <string.h> #include <iostream> #include <set> using namespace std; ]; set<int>se; set<int>::iterator it1,it,it2; int main() { int i,x,y,num,n,m; scanf("%d%d"…