Wow! Such Conquering! Problem Description There are n Doge Planets in the Doge Space. The conqueror of Doge Space is Super Doge, who is going to inspect his Doge Army on all Doge Planets. The inspection starts from Doge Planet 1 where DOS (Doge Olymp…

Problem Description There are n Doge Planets in the Doge Space. The conqueror of Doge Space is Super Doge, who is going to inspect his Doge Army on all Doge Planets. The inspection starts from Doge Planet 1 where DOS (Doge Olympic Statue) was built.…

Time Limit: 15000/8000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description There are n Doge Planets in the Doge Space. The conqueror of Doge Space is Super Doge, who is going to inspect his Doge Army on all Doge Planets. Th…

http://www.lydsy.com/JudgeOnline/problem.php?id=1612 赢+输==n-1 则一定确定 dfs和floyd都行(dfs我不确定,因为我没提交,权限还没开啊囧...可能要过两天了..) dfs: #include <cstdio> #include <cstring> #include <cmath> #include <string> #include <iostream> #include <…

貌似···················· 这个算法深的东西还是很不熟悉!继续学习!!!! ++++++++++++++++++++++++++++ ============================ ++++++++++++++++++++++++++++ ------------------------------------------------- ============================ #include<stdio.h> #include<string…

Collect More Jewels Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 6713    Accepted Submission(s): 1558 Problem Description It is written in the Book of The Lady: After the Creation, the cruel…

Wow! Such Sequence! 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=4893 Description Recently, Doge got a funny birthday present from his new friend, Protein Tiger from St. Beeze College. No, not cactuses. It's a mysterious blackbox. After some resea…

嗯... 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1312 一道很经典的dfs,设置上下左右四个方向,读入时记下起点,然后跑dfs即可...最后答案加上起点的1,无需回溯!! AC代码: #include<cstdio> #include<iostream> #include<cstring> using namespace std; ][] = {{-, }, {, }, {, -}, {, }}; int n,…

Problem Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can't move on red tiles, he can mo…

Minimal Ratio Tree Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3345    Accepted Submission(s): 1019 Problem Description For a tree, which nodes and edges are all weighted, the ratio of it i…

题目链接:pid=3131">HDU 3131 One-Two-Five! (暴力搜索) 题意:给出一串数字,要求用加,减,乘,除(5/2=2)连接(计算无优先级:5+3*6=8*6=48),求全部结果中,含有'3'且该数字出现频率最大.若频率相等,输出数字最大的. 暴力解决之 AC代码: #include <stdio.h> #include <map> #include <string.h> #include <algorithm> #d…

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HDU 3496 Watch The Movie(看电影) Time Limit: 1000MS   Memory Limit: 65536K [Description] [题目描述] New semester is coming, and DuoDuo has to go to school tomorrow. She decides to have fun tonight and will be very busy after tonight. She like watch cartoon…

HDU 5224 Tom and paper(最小周长) Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u   Description There is a piece of paper in front of Tom, its length and width are integer. Tom knows the area of this paper, he wants to know th…

HDU 5868 Different Circle Permutation(burnside 引理) 题目链接http://acm.hdu.edu.cn/showproblem.php?pid=5868 Description You may not know this but it's a fact that Xinghai Square is Asia's largest city square. It is located in Dalian and, of course, a landm…

Cleaning Robot (bfs+dfs) Here, we want to solve path planning for a mobile robot cleaning a rectangular room floor with furniture. Consider the room floor paved with square tiles whose size fits the cleaning robot (1 * 1). There are 'clean tiles' and…

题意:定义如果一个数能表示为M^k,那么这个数是好数,问你1~n有几个好数. 思路:如果k是合数,显然会有重复,比如a^(b*c) == (a^b)^c,那么我们打个素数表,指数只枚举素数,2^60 > 1e18,所以打60以内素数就够了.但是显然指数为素数依然会有重复的,比如(a^b)^c == (a^c)^b,这里就要用到容斥了.我们如果用一个数组a[i]表示指数为第i个素数的数的个数,那么最终答案应该是,加上一个的,减去两个的,加上三个的(因为2 * 3 * 5 * 7 > 60,最多只…

题目如题.题解如题. 因为目标点最多仅仅有4个,先bfs出俩俩最短路(包含起点).再dfs最短路.)0s1A;(当年弱跪杭州之题,现看如此简单) #include<iostream> #include<vector> #include<cstdio> #include<cstring> #include<queue> using namespace std; struct point { int x,y; int cnt; }; char a[1…

http://acm.hdu.edu.cn/showproblem.php?pid=2063 题意:有m个男,n个女,和 k 条边,求有多少对男女可以搭配. 思路:裸的二分图最大匹配,匈牙利算法. 枚举每一个男生,然后对其DFS,在DFS中枚举女生,如果有边相连的话,如果这个女生还没有搭档(match == -1),那么这个女生的搭档就是当前的男生,否则继续DFS这个女生的搭档,看看能不能让这个女生本来的搭档和其他女生搭配,从而给当前的男生腾出位置. #include <cstdio> #in…

https://www.luogu.org/problem/P1037 题目描述 给出一个整数 n(n<1030) 和 k 个变换规则(k<=15). 规则: 一位数可变换成另一个一位数:规则的右部不能为零. 例如:n=234.有规则(k＝2): 2-> 5 3-> 6 上面的整数 234 经过变换后可能产生出的整数为(包括原数): 234 534 264 564 共 4 种不同的产生数 问题: 给出一个整数 n 和 k 个规则. 求出: 经过任意次的变换(0次或多次),能产生出多…

http://acm.hdu.edu.cn/showproblem.php?pid=2732 题意:给出两个地图,蜥蜴从一个柱子跳跃到另外一个地方,那么这个柱子就可能会坍塌,第一个地图是柱子可以容忍跳跃多少次(即从它为起点可以跳跃多少次,然后坍塌),第二个地图是蜥蜴的位置.还有一个跳跃距离d,即蜥蜴可以跳跃不超过d的距离(曼哈顿距离),如果跳到地图外面,即蜥蜴逃跑成功,问最终留下的蜥蜴数最少是多少. 思路:我觉得如果不是在做网络流套题应该想不到这是网络流.其实挺简单的建图.首先考虑蜥蜴的位置,和…

题目链接 http://acm.split.hdu.edu.cn/showproblem.php?pid=4283 Problem Description The TV shows such as You Are the One has been very popular. In order to meet the need of boys who are still single, TJUT hold the show itself. The show is hold in the Small…

[编程题](满分33分) "数独"是当下炙手可热的智力游戏.一般认为它的起源是"拉丁方块",是大数 学家欧拉于1783年发明的. 如图[1.jpg]所示:6x6的小格被分为6个部分(图中用不同的颜色区分),每个部分含有6个小格(以下也称为分组). 开始的时候,某些小格中已经填写了字母(ABCDEF之一).需要在所有剩下的小格中补填字母. 全部填好后,必须满足如下约束: 1. 所填字母只允许是A,B,C,D,E,F 中的某一个. 2. 每行的6个小格中,所填写的字母不…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4717 说明下为啥满足三分: 设y=f(x) (x>0)表示任意两个点的距离随时间x的增长,距离y的变化.则f(x)函数单调性有两种:1.先单减,后单增.2.一直单增. 设y=m(x) (x>0)表示随时间x的增长,所有点的最大距离y的变化.即m(x)是所有点对构成的f(x)图像取最上面的部分.则m(x)的单调性也只有两种可能:1.先单减,后单增.2.一直单增. 这个地方的证明可以这样:假如时刻t1…

[NOI2007] 社交网络 ★★   输入文件:network1.in   输出文件:network1.out   简单对比 时间限制:1 s   内存限制:128 MB [问题描述] 在社交网络(social network)的研究中,我们常常使用图论概念去解释一些社会现象.不妨看这样的一个问题.在一个社交圈子里有n个人,人与人之间有不同程度的关系.我 们将这个关系网络对应到一个n个结点的无向图上,两个不同的人若互相认识,则在他们对应的结点之间连接一条无向边,并附上一个正数权值c,c越小,表…

Friends Time Limit: 2 Seconds      Memory Limit: 65536 KB Alice lives in the country where people like to make friends. The friendship is bidirectional and if any two person have no less thank friends in common, they will become friends in several da…

A Knight's Journey Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 28697   Accepted: 9822 Description Background  The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey  a…

N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all know, some cows code better than others. Each cow has a certain constant skill rating that is unique among the competitors. The contest is conduct…

题意: 快递到了:你是某个岛国(ACM-ICPC Japan)上的一个苦逼程序员,你有一个当邮递员的好基友利腾桑遇到麻烦了:全岛有一些镇子通过水路和旱路相连,走水路必须要用船,在X处下船了船就停在X处.而且岛上只有一条船,下次想走水路还是得回到X处才行:两个镇子之间可能有两条以上的水路或旱路:邮递员必须按照清单上的镇子顺序送快递(镇子可能重复,并且对于重复的镇子不允许一次性处理,比如ABCB的话B一定要按顺序走两次才行). 测试数据有多组: N M x1 y1 t1 sl1 x2 y2 t2 s…