https://vjudge.net/problem/UVALive-7672 题意    输入一个五位数n 问由12345变到n的操作最少次数 不可达输出-1 有三种操作 1.交换相邻的位置 次数不限制 2.使某一位上的数字+1   最多使用三次 (mod 10) 3.使某一位上的数字*2   最多使用两次    (mod 10) 解析 很容易想到预处理,然后O(1) 查询,操作次数最少,所以就bfs,一层一层向外拓展. 需要注意的是 一个数被访问过还可以再被访问(进队列),因为得到一个数可以…
2013 changsha zoj 3726 3728 3736 3735 2013 chengdu hud 4786 4788 4790 2013 hangzhou hdu 4770 4771 4772 2013 nanjing hdu 4802 4810 4811 2013 changchun hdu 4813 4815 4821 2014 mudanjiang zoj 3819 3827 3822 3829 2014 anshan hdu 5073 5074 5078 2014 beiji…
HDU 4041 Eliminate Witches! (模拟题 ACM ICPC 2011 亚洲北京赛区网络赛题目) Eliminate Witches! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 863    Accepted Submission(s): 342 Problem Description Kaname Mado…
摘要 本文主要列举并求解了2016 ACM/ICPC亚洲区青岛站现场赛的部分真题,着重介绍了各个题目的解题思路,结合详细的AC代码,意在熟悉青岛赛区的出题策略,以备战2018青岛站现场赛. HDU 5984 Pocky 题意 给出一根棒子(可以吃的)的长度x和切割过程中不能小于的长度d,每次随机的选取一个位置切开,吃掉左边的一半,对右边的棒子同样操作,直至剩余的长度不大于d时停止.现在给出x和d,问切割次数的数学期望是多少. 解题思路 当看到第二个样例2 1时,结果是1.693147,联想到ln…
2016 ACM/ICPC Asia Regional Qingdao Online(部分题解) 5878---I Count Two Three http://acm.hdu.edu.cn/showproblem.php?pid=5878 Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1287    Accepted Submissi…
Football Games Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 439    Accepted Submission(s): 157 Problem Description A mysterious country will hold a football world championships---Abnormal Cup…
Function Time Limit: 7000/3500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 976    Accepted Submission(s): 375 Problem Description The shorter, the simpler. With this problem, you should be convinced of this tru…
距离长春区域赛结束已经4天了,是时候整理一下这次比赛的点点滴滴了. 也是在比赛前一周才得到通知要我参加长春区域赛,当时也是既兴奋又感到有很大的压力,毕竟我的第一场比赛就是区域赛水平,还是很有挑战性的.在接到通知后,我便开始临阵抱佛脚,课也不怎么听了,上课把时间全都用在了看各种算法上,回到实验室便整理模板.开cf练手.在去比赛前,已经将所看过的算法模板都整理好了. 周五上午9点三刻左右,我们便出发了,需要经历12个小时才能到达我们此次的目的地——长春,途中我还将计算几何稍微看了一下.直到晚上11点…
Different Circle Permutation Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 208    Accepted Submission(s): 101 Problem Description You may not know this but it's a fact that Xinghai Square is…
原题地址:http://acm.hdu.edu.cn/showproblem.php?pid=5881 Tea Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 451    Accepted Submission(s): 124 Problem Description Tea is good. Tea is life. Tea is e…
hannnnah_j’s Biological Test Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 802    Accepted Submission(s): 269 Problem Description hannnnah_j is a teacher in WL High school who teaches biolog…
I Count Two Three Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 782    Accepted Submission(s): 406 Problem Description I will show you the most popular board game in the Shanghai Ingress Resis…
QSC and Master Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 859    Accepted Submission(s): 325 Problem Description Every school has some legends, Northeastern University is the same. Enter…
odd-even number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 388    Accepted Submission(s): 212 Problem Description For a number,if the length of continuous odd digits is even and the length…
Different GCD Subarray Query Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 681    Accepted Submission(s): 240 Problem Description This is a simple problem. The teacher gives Bob a list of prob…
Friends and Enemies Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 291    Accepted Submission(s): 160 Problem Description On an isolated island, lived some dwarves. A king (not a dwarf) ruled t…
Barricade Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 997    Accepted Submission(s): 306 Problem Description The empire is under attack again. The general of empire is planning to defend his…
Football Games Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 802    Accepted Submission(s): 309 Problem Description A mysterious country will hold a football world championships---Abnormal Cup…
Sparse Graph Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 689    Accepted Submission(s): 238 Problem Description In graph theory, the complement of a graph G is a graph H on the same vertic…
2016 ACM ICPC Asia Region - Tehran A - Tax 题目描述:算税. solution 模拟. B - Key Maker 题目描述:给出\(n\)个序列,给定一个序列,问\(n\)个序列中有多少个序列满足对应位的值小于或等于给定序列的值. solution 模拟. C - IOI 2017 Logo 题目描述:有\(m\)件作品,\(n\)个人投票,每个人可以选三件作品,分别给\(1, 2, 3\)分,每件作品按总分排序,总分相同按得\(3\)分的数量排序,还…
转载请注明出处: http://www.cnblogs.com/fraud/          ——by fraud 下午在HDU上打了一下今年北京区域赛的重现,过了5题,看来单挑只能拿拿铜牌,呜呜. 先将这五题的题解放上来,剩余题目等搞出来再补上 A题 A Curious Matt Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 512000/512000 K (Java/Others) Problem Description T…
铜铜铜…… 人呐真奇怪 铁牌水平总想着运气好拿个铜 铜牌水平总想着运气好拿个银 估计银牌的聚聚们一定也不满意 想拿个金吧 这次比赛挺不爽的 AB两道SB题,十分钟基本全场都过了 不知道出这种题有什么意思,而且还是两道 C是一道矩阵快速幂 不算难可是还是卡了很久 还好是1A E是一道搜索题,也是简单题 呵呵 可能是区域赛的问题 大家都不敢随便写吧 后来我们暴力过了的时候都觉得自己好SB 那个时候都快封榜了 怎么这么蠢呐 然后看的H题,其他题做出来的都很少,没怎么想 H题 哎 我们想了好久才想明白样…
这是2014年上海区域赛的一道水题.请原谅我现在才发出来,因为我是在太懒了.当然,主要原因是我刚刚做出来. 其实去年我就已经看到这道题了,因为我参加的就是那一场.但是当时我们爆零,伤心的我就再也没有看过那一场的题了.昨天我的队友的高中同学建议我们一起来打一打这场比赛吧,然后我才再次回顾这场比赛.结果一堆琐事,我一共也没有做多久的题,我的队友扎扎实实看了5个小时的题,把另一道水题给过了.全场我们也只过了那么一道题.学姐说,做重现赛和现场赛比较,需要去掉一题,那么我们又爆零了. 题意: 我方有n个人…
题目链接 problem description 5 friends play LOL together . Every one should BAN one character and PICK one character . The enemy should BAN 55 characters and PICK 55 characters . All these 2020 heroes must be different . Every one can BAN any heroes by h…
讲道理我挺想去大连的…… 毕竟风景不错…… 而且这次能去北京也是靠大连网络赛这一场拉开的优势…… 一道补图最短路一道数学推论简直爽爆…… 当然 除了这一场 其他场都非常划水…… 上次看到别人的博客用这个骗百度的爬虫…… 我也来试试…… 最后恭喜我然和两位学长顺利拿到牌子~…
做法:打表找规律 大数是过不了这个题的(但可以用来打表) 先找k的前缀,前缀对应边缘数字是哪个 如果第0位是2-9 对应奇数长度的1-8 第0位为1时,第1位为0时对应奇数长度的9,为1-9时对应偶数长度的1-9,剩下的根据奇偶判断先从头到尾再从尾到头跑一编即可 如100会得到909 100234会得到902343209 110会得到1001 11234会得到12344321 #include <iostream> #include <string> using namespace…
任意门:http://acm.hdu.edu.cn/showproblem.php?pid=5979 按AC顺序: I - Convex Time limit    1000 ms Memory limit 65536 kB OS Windows We have a special convex that all points have the same distance to origin point. As you know we can get N segments after linki…
原题网址:https://open.kattis.com/problems/classrooms Classrooms The new semester is about to begin, and finding classrooms for orientation activities is always a headache. There are k classrooms on campus and n proposed activities that need to be assigne…
原题网址:https://open.kattis.com/problems/boxes Boxes There are N boxes, indexed by a number from 1 to N.Each box may (or not may not) be put into other boxes. These boxes together form a tree structure (or a forest structure, to be precise). You have to…
原题地址:https://open.kattis.com/problems/aplusb FFT代码参考kuangbin的博客:http://www.cnblogs.com/kuangbin/archive/2013/07/24/3210565.html A+B Problem Given N integers in the range [−50000,50000], how many ways are there to pick three integers ai, aj, ak, such…