Contest 152】的更多相关文章

2019-09-01 20:59:55 总体感受:最近几次参加contest发现自己的水平还是严重的不够,尤其是在处理一些异常情况的时候,遇到TLE,MLE如何有效的进行Debug是需要去锻炼的. 注意点: 1)TLE,首先可以通过加上特殊判断进行解决,这个需要在实际的问题中考虑好特殊的情况,过滤掉明显不符合的解:其次可以考虑是否可以使用位运算来进行状态压缩,同时降低时间复杂度. 2)1e9 + 7不要使用long / double去规避,目前有的方法有加法每次取mod,或者使用bigInteg…
退役老人现在连leetcode都不会做了 = = 今天早上做了leetcode第三题题目看错了,加上比赛中间还在调投稿的实验,一心二用直接gg 总结下教训就是 本渣现在做题连题目都看不清就开始做.开始写题之前应当把样例过一遍,然后自己再造1-2个例子,然后再开始做 A题:统计素数的个数(素数筛或者sqrt(n)判断都可以),然后分别计算count! class Solution { public: int numPrimeArrangements(int n) { vector<int> ha…
题意:模拟栈,正常pop,push,多一个merge A B 形象地说就是就是将栈B堆到栈A上. 题解:直接用list 的pop_back,push_back,splice 模拟, 坑:用splice,第一次超时,正要大改 发现是cin超时... #define _CRT_SECURE_NO_WARNINGS #include<iostream> #include<vector> #include<cstring> #include<set> #includ…
http://acm.zju.edu.cn/onlinejudge/showContestProblem.do?problemId=5738 题意 给你一个map 每个格子里有一个红绿灯,用0,1表示状态.当所在格子为0时只能上下移动,为1时左右移动.人一秒动一次,并且每一秒必须移动,灯每秒改变依次状态.问从起点到终点最短时间. 题解:   就看成一道墙壁会按时间周期改变的走迷宫. 只是墙壁的作用是限制走的方向而不是不能通过. 关于如何判定迷宫无法走通,按套路设了一个vis数组,试了一发就ac了…
官方解题报告:http://bestcoder.hdu.edu.cn/blog/2015-multi-university-training-contest-6-solutions-by-zju/ 表示很难看....orz 1003题      链接:http://acm.hdu.edu.cn/showproblem.php?pid=5355 Cake Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K…
点击打开链接 Happy Reversal Time Limit: 1000ms Memory Limit: 65536KB 64-bit integer IO format: %lld      Java class name: Main pid=34987" rel="nofollow" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" styl…
Assignment Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 297    Accepted Submission(s): 152 Problem Description Tom owns a company and he is the boss. There are n staffs which are numbered fro…
B:Button Bashing You recently acquired a new microwave, and noticed that it provides a large number of buttons to be able to quickly specify the time that the microwave should be running for. There are buttons both for adding time, and for subtractin…
Link Aeon 显然字典序最大就是把最小的字母放在最后 Business [动态规划] 简单dp dp[i][j]dp[i][j]dp[i][j]表示到第iii天,当前有jjj块钱,最后返还的钱最多为多少 完全背包转移 Celebration Description 有一个环 ,求把它分成三段,使得每一段内无重复元素,且三段长度可以作为某个三角形的三边的方案数. 一个拆分方案可以看作一个三元组 (a,b,c)(a,b,c)(a,b,c),其中 0<a<b<c≤n0lt alt b l…
    Programming Contest Problem Types Hal Burch conducted an analysis over spring break of 1999 and made an amazing discovery: there are only 16 types of programming contest problems! Furthermore, the top several comprise almost 80% of the problems s…
Area of Mushroom Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2390    Accepted Submission(s): 578 Problem Description Teacher Mai has a kingdom with the infinite area. He has n students guard…
Differencia Time Limit: 10000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 601    Accepted Submission(s): 173 Problem Description Professor Zhang has two sequences a1,a2,...,an and b1,b2,...,bn. He wants to…
Rigid Frameworks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 337    Accepted Submission(s): 273 Problem Description Erik Demaine is a Professor in Computer Science at the Massachusetts Insti…
题目链接: Coding Contest Time Limit: 2000/1000 MS (Java/Others)     Memory Limit: 65536/65536 K (Java/Others) Problem Description A coding contest will be held in this university, in a huge playground. The whole playground would be divided into N blocks,…
偏方记录背包里的物品.....每个背包的价值+0.01 Happy Programming Contest Time Limit: 2 Seconds      Memory Limit: 65536 KB In Zhejiang University Programming Contest, a team is called "couple team" if it consists of only two students loving each other. In the cont…
2012 Multi-University Training Contest 9 / hdu4389 打巨表,实为数位dp 还不太懂 先这样放着.. 对于打表,当然我们不能直接打,这里有技巧.我们可以这样:每隔100000我们统计一次,这样在10^9范围内,我们得到10000个数. 然后就很好解决了... 数位dp:http://blog.csdn.net/acdreamers/article/details/9318727 #include<iostream> #include<cst…
2014 Multi-University Training Contest 9#11 Killing MonstersTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 562    Accepted Submission(s): 308 Problem Description Kingdom Rush is a popular TD…
2014 Multi-University Training Contest 9#6 Fast Matrix CalculationTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 424    Accepted Submission(s): 219 Problem Description One day, Alice and Bob…
每次开一个坑都像是重新被碾压的预感 最近的新闻,以前很喜欢乔任梁的<复活>...然后他就死了...感觉我再多愁善感一点的话...就要悲伤逆流成河了吧... Contest 09/24(乐滋滋的场,良心场)100+100+0 T1:这题做得很羞愧...因为我根本证不出那个结论..猜的.. T2:这题做得很羞愧...因为听到了隔壁GG讲了伸头缩尾法... T3:因为少了一个半小时就没交.yy了一个跟正解差不多的想法...只是把枚举K去掉了,但是这样就MLE了...我口胡一下..不写了因为懒得评测.…
8/11 2016 Multi-University Training Contest 1 官方题解 老年选手历险记 最小生成树+线性期望 A Abandoned country(BH) 题意: 1. 求最小生成树 2. 求在某一棵最小生成树任意两点的最小距离的期望值. 思路: 首先题目说了边权值都是不同的,所以最小生成树唯一.那么只要统计出最小生成树的每一条边在“任意两点走经过它“的情况下所贡献的值,发现在一棵树里,一条边所贡献的次数为,sz[v]表示v子树包括节点v的个数.如下图所示,红边所…
8/13 2016 Multi-University Training Contest 2官方题解 数学 A Acperience(CYD)题意: 给定一个向量,求他减去一个  α(>=0)乘以一个值为任意+1或-1的B向量后得到向量,求这个向量膜的最小值思路: 展开式子,当时最小,结果为. 代码: #include <bits/stdc++.h> using namespace std; long long w,a,b,c,a2; long long gcd(long long x,l…
5/11 2016 Multi-University Training Contest 3官方题解 2016年多校训练第三场 老年选手历险记 暴力 A Sqrt Bo(CYD) 题意:问进行多少次开根号向下取整能使给定的值为1,若为5次以上,则输出TAT: 思路: 有5次这个限制,得知值最大为10的11次方左右,存下后运算即可,注意初始值为0时运算的次数是大于5次的,输出TAT: 代码: #include <bits/stdc++.h> using namespace std; char st…
6/12 2016 Multi-University Training Contest 4官方题解 KMP+DP A Another Meaning(CYD) 题意: 给一段字符,同时给定你一个单词,这个单词有双重意思,字符串中可能会有很多这种单词,求这句话的意思总数:hehe. 思路: 可以用kmp算法快速求出串中的单词数量,若单词是分开的,每个单词有两种意思,可以直接相乘,若两个及以上单词在原串中是有交集的,那么数量不是直接相乘,发现这片连在一起的单词数量dp[i]=dp[i-1]+dp[j…
6/12 2016 Multi-University Training Contest 5 期望+记忆化DP A ATM Mechine(BH) 题意: 去ATM取钱,已知存款在[0,K]范围内,每一次输入取出钱的金额,如果大于存款,ATM会发出警报,最多W次,问能在W次内取出所有存款的取款次数的期望值. 思路: 设dp[k][w]表示范围存款在[0,k]内,还有w次报警机会的期望值.状态转移方程: 代码: #include <bits/stdc++.h> const int N = 2e3…
5/12 2016 Multi-University Training Contest 6 官方题解 打表找规律/推公式 A A Boring Question(BH) 题意: ,意思就是在[0,n]里选择m个数字的相邻数字二项式组合的积的总和. 思路: 想了好久,不会,但是这题有300多人过,怀疑人生... 打了个表: n=0, m=2, ans=1n=1, m=2, ans=3n=2, m=2, ans=7n=3, m=2, ans=15n=4, m=2, ans=31n=5, m=2, a…
PowMod Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1008    Accepted Submission(s): 341 Problem Description Declare:k=∑mi=1φ(i∗n) mod 1000000007 n is a square-free number. φ is the Euler's…
Subway Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 860    Accepted Submission(s): 126Special Judge Problem Description jiefangxuanyan and yiyi cat are universally acknowledged model couple…
Game Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 588    Accepted Submission(s): 146 Problem Description   Sea5 and wzh are playing games. There are some guards on an n × m chessboard. Every…
A.Toda 2 思路:可以有二分来得到最后的数值,然后每次排序去掉最大的两个,或者3个(奇数时). /************************************************ *Author* : Ray(siludose) *Created Time* : 2016��10��24�� ����һ 15ʱ00��28�� **Problem** : /media/ray/708898B888987E72/Users/Administrator/Desktop/2016…
April Fools Day Contest 2014 A.C.H三道题目 =================================================================== A. The Great Game 这题怎没看懂..看了官方题解真是恍然大悟啊,原来是石头剪刀布啊!!! 8< 代表剪刀啊 () 代表石头啊 [] 代表布啊 真是逆天啊,这么一说还真觉得有点像....尤其是那个剪刀. 给那个出题人的想象力跪了. /* * ===============…