根据兔子试药情况可以缩小范围,如果死了,不在试过的药里面,如果活着,在试过的药里. 最糟的情况: 两个原则 1.能确定魔药所在的范围的尽量大,2.死得兔子尽量多. 如果当前不知道情况的药n为k的二倍以上,那么基于上面两个原则,试过药的兔子肯定会死. 没死:范围k,损失的兔子0 死了:范围n-k,损失的兔子1 (n>2*k) (符合两个原则) 设r=n%k,经过上述过程,损失了n/k-1只兔子,转移到了当前状态范围w = k+r, 1.r == 0 那么可以补充一个毒药,变成w=k+1,根据鸽巢原…

A. Potion of Immortality Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100187/problem/A Description The world famous scientist Innokentiy has just synthesized the potion of immortality. Unfortunately, he put the flask with th…

题目链接:http://codeforces.com/gym/100187/problem/A 题解: 光题意就想了很久:在最坏情况下的最小兔子数.其实就是至少用几只兔子就一定能找出仙药(答案存在的话).再注意一下特殊情况就可以了, 代码如下: #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <string> #include…

Problem H. ICPC QuestTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100500/attachments Description Noura Boubou is a Syrian volunteer at ACM ACPC (Arab Collegiate Programming Contest) since 2011. She graduated from Tishreen Un…

题目链接:http://codeforces.com/gym/101981/attachments There are n heroes and m monsters living in an island. The monsters became very vicious these days,so the heroes decided to diminish the monsters in the island. However, the i-th hero can only kill on…

题目链接: http://codeforces.com/gym/101161/attachments 题意: 总共有n瓶药可供选择 每瓶药可以增加$e_i$点体力,和$p_i$点毒性 每分钟消耗1点毒性,毒性不能大于99,体力不能小于0大于100 击败一只怪物消耗$k$点体力,花费$m$分钟 计算不最大击败怪物的数量 数据范围: $1\leq n\leq 8$ 分析: 定义$dp[i][j][k]$为药物状态为$i$,体力为$j$,毒性为$k$的最大击败数 初始化$dp[0][100][0]=0…

题意:有n个药瓶,里面有一个有毒,然后每次拿兔子去试吃k瓶并且只能是k瓶,如果兔子死了就知道那瓶是毒药了,现在问你最少兔子要试吃几次. 分析:这题卡了好久,其实很简单.先考虑肯定要吃n/k次,那么剩下的如果只有一瓶或没有,则答案就是n/k,如果有两瓶以上,则只需再吃一次就行了.因为兔子只需在剩下的m瓶里吃m-1瓶,然后在之前的n-m瓶中吃(k-m+1)瓶,就可以知道剩下的那个是毒药了. #include <cstdio> #include <cmath> #include <…

题面 题意:n个英雄,m个怪兽,第i个英雄可以打第i个集合里的一个怪兽,一个怪兽可以在多个集合里,有k瓶药水,每个英雄最多喝一次,可以多打一只怪兽,求最多打多少只 n,m,k<=500 题解:显然的最大流裸题,多加一个药水点,药酱入度k,然后再连向英雄 队友抄的模板所以不是我的那个板子 #include<bits/stdc++.h> using namespace std; struct Edge { int from,to,cap,flow; Edge(int u,int v,int…

Magic Potion http://codeforces.com/gym/101981/attachments/download/7891/20182019-acmicpc-asia-nanjing-regional-contest-en.pdf 从源点到英雄分别拉容量为1和2的边,跑两遍网络流,判断两次的大小和k的大小 #include<iostream> #include<cstring> #include<string> #include<cmath&g…

 Gym 101047M Removing coins in Kem Kadrãn Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Andréh and his friend Andréas are board-game aficionados. They know many of their friend…

 Gym 101047K Training with Phuket's larvae Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Thai cuisine is known for combining seasonings so that every dish has flavors that are…

Gym 101047E Escape from Ayutthaya Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u  Practice  Description standard input/output Ayutthaya was one of the first kingdoms in Thailand, spanning since its foundation in 1350 to…

 Gym 101047B  Renzo and the palindromic decoration Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output At the ruins of Wat Phra Si Sanphet (วดพระศรสรรเพชญ), one can find famous inscr…

题目链接 http://codeforces.com/gym/101102/problem/J Description standard input/output You are given an array A of integers of size N, and Q queries. For each query, you will be given a set of distinct integers S and two integers L and R that represent a…

题目链接 http://codeforces.com/gym/100917/problem/J Description standard input/outputStatements The jury of Berland regional olympiad in informatics does not trust to contest management systems, so the Berland regional programming contest is judged by th…

题目链接 http://codeforces.com/gym/100917/problem/D problem description Famous Berland coder and IT manager Linus Gates announced his next proprietary open-source system "Winux 10.04 LTS" In this system command "dir -C" prints list of all…

题目链接 http://codeforces.com/gym/101102/problem/D problem  description Given an R×C grid with each cell containing an integer, find the number of subrectangles in this grid that contain only one distinct integer; this means every cell in a subrectangle…

题目链接 http://codeforces.com/gym/101102/problem/C problem description Judge Bahosain was bored at ACM AmrahCPC 2016 as the winner of the contest had the first rank from the second hour until the end of the contest. Bahosain is studying the results of t…

Gym Class  Accepts: 849  Submissions: 4247  Time Limit: 6000/1000 MS (Java/Others)  Memory Limit: 65536/65536 K (Java/Others) Problem Description 众所周知,度度熊喜欢各类体育活动. 今天,它终于当上了梦寐以求的体育课老师.第一次课上,它发现一个有趣的事情.在上课之前,所有同学要排成一列, 假设最开始每个人有一个唯一的ID,从1到NN,在排好队之后,每个…

Weird Cryptography Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u  Gym 100935B Description standard input/output Khaled was sitting in the garden under an apple tree, suddenly! , well... you should guess what happened, a…

Board Game Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u  Gym 100935G Description standard input/outputStatements Feras bought to his nephew Saleem a new game to help him learning calculating. The game consists of a boa…

Gym 100935F A Poet Computer Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Description standard input/output The ACM team is working on an AI project called (Eih Eye Three) that allows computers to write poems. One of th…

Evil Time Limit: 5 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100463/attachments Description Richard is evil. He wants to give another geometry problem to the participants of this contest and I’m afraid I have no choice but to comply. Wh…

Crossings Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100463 Description Given a permutation P of {0, 1, ..., n − 1}, we define the crossing number of it as follows. Write the sequence 0, 1, 2, . . . , n − 1 from left to ri…

J. Deck Shuffling Time Limit: 2   Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100187/problem/J Description The world famous scientist Innokentiy continues his innovative experiments with decks of cards. Now he has a deck of n cards and k…

K. Perpetuum Mobile Time Limit: 2 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100187/problem/K Description The world famous scientist Innokentiy almost finished the creation of perpetuum mobile. Its main part is the energy generator which…

Problem J. Triatrip Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100342/attachments Description The travel agency “Four Russians” is offering the new service for their clients. Unlike other agencies that only suggest one-way…

Problem C. Painting CottagesTime Limit: 2 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100342/attachments Description The new cottage settlement is organized near the capital of Flatland. The construction company that is building the settl…

Problem A. Poetry Challenge Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100500/attachments Description Let’s check another challenge of the IBM ICPC Chill Zone, a poetry challenge. One says a poetry string that starts with a…

F. The Pool for Lucky Ones Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/F Description A new swimming pool has been built in Kazan for the forthcoming Water Sports World Championship. The pool has N lanes. Some…