Now Loading!!! Time Limit: Second Memory Limit: KB DreamGrid has integers . DreamGrid also has queries, and each time he would like to know the value of for a given number , where , . Input There are multiple test cases. The first line of input is an…

每年省赛必有的一道模拟题,描述都是非常的长,题目都是蛮好写的... sigh... 比赛的时候没有写出这道题目 :( 题意:首先输入4个数,n,q,p,c代表有n个队伍,q个服务器,每支队伍的初始分数p, 还有c次操作对于每次操作,首先输入一个k,代表k次攻击每次攻击有三个数,a,b,c, 代表a通过c服务器成功的攻击了b对于每次成功的攻击,b会失去n-1分, 这n-1分会平分给通过同一服务器攻击b的几支队伍然后是q行,每行n个数, 分别代表1~n是否成功维护了,1为成功,0为不成功不成功的队伍…

  前4道水题就不说了,其中我做了C题,1Y,小心仔细写代码并且提交之前得确认无误后提交才能减少出错率. 结果后面2题都由波神做掉,学长带我们飞~ 终榜 官方题解   ZOJ 3946 Highway Project(K题) 题意:求到所有点最短花费时间总和以及在这前提下的走过的路的最小花费金钱 分析:首先最短路跑一个,然后在d[v] == d[u] + time的一些边上选择最小金钱,注意这里只要cost[v] = cost不用累加cost[u].就是跑了两次最短路. #include <bi…

也是一道比赛时候没有写出来的题目,队友想到了解法不过最后匆匆忙忙没有 A 掉 What a pity... 题意:定义Beauty数是一个序列里所有不相同的数的和,求一个序列所有字序列的Beauty和 1 <= N <= 100000 解题思路:由于数据比较大,常规方法求字序列和肯定是行不通的,我们不妨这样想:因为要区别于不同的数 ,可以看成序列里的数是一个一个加进去的,每次加入一个数,统计前面序列里第一次出现新加入的这个数的位置,表达的不好, 举个例子: 1 2 3 定义dp(当前元素前面(…

Seven Segment Display Time Limit: 2 Seconds      Memory Limit: 65536 KB A seven segment display, or seven segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix…

思路:一开始考虑n个朋友可以有c种可能,根据回答的问题,如果是yes那么可以确定一些朋友的范围,将原本不在这个范围内的删除即可:如果是"no",说明这些朋友都应该被删除,那么最后看第i个人候选的情况是不是只有一种,如果是直接输出名字,否则就是不确定或者不存在.下面介绍利用贡献优化,并且非常好写的方法. AC代码 #include <cstdio> #include <cmath> #include <cctype> #include <algo…

题目:http://acm.zju.edu.cn/onlinejudge/showContestProblem.do?problemId=5996 方法: 在大佬的指导下完成. 寻找峰值,找到一共k个峰值. 遍历:使a[0]=231,a[n+1]=231(0xfffffff),从第一个数开始,判断它的存在有多少个峰值 yu,它被去掉后有多少个峰值xz  (这时不是找出所有的峰值,而是看(a[i-1],a[i],a[i+1])这三个数中有几个是峰值就可以). q存储着上一次的yu-xz;也就是去掉…

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=6003 题意 \(数组a通过交换一对数字,得到了b数组,给出x=\sum^n_{k=1}ka_k和y=\sum^n_{k=1}ka_k^2和b数组,问有多少对l,r(l<=r)能满足条件\) 题解 \(\frac{Y_2-Y_1}{X_2-X_1}=a_i+a_j=b_i+b_j\) \(X_2-X_1 = (a_i-a_j)*(j-i)=(b_j-b_i)*(j-i)\) \…

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=6012 题意 给你两个串,可以翻转a串的一个区间,问有多少对l,r使得翻转后的a串等于b串 题解 沙比提,比赛时想了想两个串相等就用马拉车求回文子串个数,觉得两个串不相等情况很复杂就没想下去了,其实两个串不相等的情况更好处理 两个串不一样的话,一定需要翻转第一个和最后一个不相等的位置(关键),判一下中间是不是回文串,然后维护一下两边即可 特判只有一个字符不相等的时候 代码 #i…

  Ace of Aces Time Limit: 2 Seconds      Memory Limit: 65536 KB There is a mysterious organization called Time-Space Administrative Bureau (TSAB) in the deep universe that we humans have not discovered yet. This year, the TSAB decided to elect an out…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3781 Time Limit: 2 Seconds      Memory Limit: 65536 KB Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are calle…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3780 Time Limit: 2 Seconds      Memory Limit: 65536 KB Leo has a grid with N × N cells. He wants to paint each cell with a specific color (either black or white). Leo has a magical bru…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3777 Time Limit: 2 Seconds      Memory Limit: 65536 KB The 11th Zhejiang Provincial Collegiate Programming Contest is coming! As a problem setter, Edward is going to arrange the order…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3965 题目: iven two depth-first-search (DFS) sequences of a binary tree, can you find a binary tree which satisfies both of the DFS sequences? Recall that a binary tree is a tree in which…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3962 题目: A seven segment display, or seven segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3961 题目: ACM (ACMers' Chatting Messenger) is a famous instant messaging software developed by Marjar Technology Company. To attract more users, Edward, the boss of Marjar Company, has re…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3960 题目: Japari Park is a large zoo home to extant species, endangered species, extinct species, cryptids and some legendary creatures. Due to a mysterious substance known as Sandstar, a…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3959 题目: It's time to prepare the problems for the 14th Zhejiang Provincial Collegiate Programming Contest! Almost all members of Zhejiang University programming contest problem setter t…

地址:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3958 题目: "Miss Kobayashi's Dragon Maid" is a Japanese manga series written and illustrated by Coolkyoushinja. An anime television series produced by Kyoto Animation aired in Japan b…

LIS Time Limit: 1 Second      Memory Limit: 65536 KB      Special Judge DreamGrid is learning the LIS (Longest Increasing Subsequence) problem and he needs to find the longest increasing subsequence of a given sequence  of length . Recall that A subs…

Now Loading!!! Time Limit: 1 Second      Memory Limit: 131072 KB DreamGrid has  integers . DreamGrid also has  queries, and each time he would like to know the value of   for a given number , where , . Input There are multiple test cases. The first l…

Team Formation For an upcoming programming contest, Edward, the headmaster of Marjar University, is forming a two-man team from N students of his university. Edward knows the skill level of each student. He has found that if two students with skill l…

Sequence Swapping Time Limit: 1 Second      Memory Limit: 65536 KB BaoBao has just found a strange sequence {<, >, <, >, , <, >} of length  in his pocket. As you can see, each element <, > in the sequence is an ordered pair, where…

D - The Lucky Week Edward, the headmaster of the Marjar University, is very busy every day and always forgets the date. There was one day Edward suddenly found that if Monday was the 1st, 11th or 21st day of that month, he could remember the date cle…

H - May Day Holiday As a university advocating self-learning and work-rest balance, Marjar University has so many days of rest, including holidays and weekends. Each weekend, which consists of Saturday and Sunday, is a rest time in the Marjar Univers…

Beauty of Array Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all contiguous subarray of the array A. Input The…

题目链接  2016 ZJCPC Problem B 题意  CF 660F的树上版本. 其他做的方法都差不多,关键是把凸壳放到树上. 每次确定扔掉几个元素的时候直接$O(1)$修改(先不清楚这个位置之后的元素因为之后还要恢复),然后$O(1)$恢复,通过这个来实现可持久. #include <bits/stdc++.h> using namespace std; #define rep(i, a, b) for (int i(a); i <= (b); ++i) #define dec…

题目链接  2016 ZJCPC Problem E 考虑一个开区间$[0, x)$对$a_{i}$取模的过程. $[0, x)$中小于$a_{i}$的部分不变,大于等于$a_{i}$的部分被切下来变成了$[0, x$ $mod$ $a_{i})$. 现在考虑开区间$[0, m+1)$,依次对$a_{1}, a_{2}, ..., a_{n}$取模. 考虑到一个数对$10^{5}$个数逐次取模,有效的取模至多$logm$次,那么同理, 这个区间最多分裂出$nlogm$个区间,这个过程用map实现…

题目:http://acm.zju.edu.cn/onlinejudge/showContestProblem.do?problemId=5501 思路:DFS,用了递归就溢出,所以可能得用非递归的.把所有可能到达终点的可能路径都计算,最后比较找最佳.限制条件很多,要细打细算.很烦,不想改了再试,写了很久了 #include <iostream> #include <cstdio> #include <string> #include <map> #incl…

我是铁牌选手 这次比赛非常得爆炸,可以说体验极差,是这辈子自己最脑残的事情之一. 天时,地利,人和一样没有,而且自己早早地就想好了甩锅的套路. 按理说不开K就不会这么惨了啊,而且自己也是毒,不知道段错误也可以是MLE,而且我的内存就是卡了那么一点点,在比赛紧张的状态下人也变傻了吧. 这次的题目难度是两边到中间一次递增的,但是我也不懂榜怎么会那样  A Peak Time Limit: 1 Second      Memory Limit: 65536 KB A sequence of  inte…