Problem Description Stan and Ollie play the game of multiplication by multiplying an integer p by one of the numbers 2 to 9. Stan always starts with p = 1, does his multiplication, then Ollie multiplies the number, then Stan and so on. Before a game…

http://acm.hdu.edu.cn/showproblem.php?pid=1517 题意:每次乘上2~9..p>=n时赢.. #include <cstdio> #include <cstring> #include <map> using namespace std; typedef long long ll; map<ll, bool> h; ll n; bool dfs(ll p) { if(p>=n) return 0; if(…

A Multiplication Game Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2674    Accepted Submission(s): 1532 Problem Description Stan and Ollie play the game of multiplication by multiplying an in…

A Multiplication Game Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3832    Accepted Submission(s): 2183 Problem Description Stan and Ollie play the game of multiplication by multiplying an in…

A Multiplication Game Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5833    Accepted Submission(s): 3303 Problem Description Stan and Ollie play the game of multiplication by multiplying an in…

A Multiplication Game Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4633    Accepted Submission(s): 2631 Problem Description Stan and Ollie play the game of multiplication by multiplying an i…

思路:求必胜区间和必败区间! 1-9 先手胜 10-2*9后手胜 19-2*9*9先手胜 163-2*2*9*9后手胜 …… 易知右区间按9,2交替出现的,所以每次除以18,直到小于18时就可以直接判断了. 代码如下: #include<cstdio> int main() { double n; while(scanf("%lf",&n)!=EOF){ ) n/=; ) puts("Stan wins."); else puts("O…

题目大意:输入一个整数n.谁先报的数大于n,谁就输了.(初始值p  == 1 , 后一个人报的数必须在前一个人报的数的基础上乘上(2 ~ 9)之间的任意一个数) 解题思路:巴什博奕的变形 1) 解题思路: 如果输入是 2 ~ 9 ,因为Stan 是先手,所以Stan 必胜 如果输入是 10~18 ,因为Ollie 是后手,不管第一次Stan 乘的是什么,Stan肯定在 2 ~ 9 之间, 如果Stan乘以 2 ,那么Ollie就乘以 9 ,就到18了,如果Stan乘以 9 , 那么Ollie乘以…

题目大意:从1开始Stan与Ollie经行博弈,stan先手,每次将当前数乘上(2~9)间的任意数,最后一次操作后大于等于n的人获胜. 题目思路: 1-9 stan 胜 10-18 ollie胜 19-162 stan 胜 163-306 ollie胜 (stan为了接近那个数尽可能的扩大选择乘9,ollie知道自己无法在一步内获胜,为了避免stan获胜所以乘上最小的数2,接下来stan最大可以到达的数为乘上9后的数:162) -- 胜负区间对称! #include<stdio.h> #inc…

Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to surround all these trees. So at first he must know the minimal required length of the rope. However, he does not know how to calculate it. Can you help him? The…

Problem Description There are many secret openings in the floor which are covered by a big heavy stone. When the stone is lifted up, a special mechanism detects this and activates poisoned arrows that are shot near the opening. The only possibility i…

Problem Description 话说上回讲到海东集团推选老总的事情,最终的结果是XHD以微弱优势当选,从此以后,"徐队"的称呼逐渐被"徐总"所取代,海东集团(HDU)也算是名副其实了. 创业是需要地盘的,HDU向钱江肉丝高新技术开发区申请一块用地,很快得到了批复,据说这是因为他们公司研发的"海东牌"老鼠药科技含量很高,预期将占全球一半以上的市场.政府划拨的这块用地是一个多边形,为了描述它,我们用逆时针方向的顶点序列来表示,我们很想了解这块…

Problem Description Mr Wang wants some boys to help him with a project. Because the project is rather complex, the more boys come, the better it will be. Of course there are certain requirements. Mr Wang selected a room big enough to hold the boys. T…

Problem Description Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he needs at least. You have to notice that not all the friends know each other, and all the friends do not want…

Problem Description 省政府"畅通工程"的目标是使全省任何两个村庄间都可以实现公路交通(但不一定有直接的公路相连,只要能间接通过公路可达即可).现得到城镇道路统计表,表中列出了任意两城镇间修建道路的费用,以及该道路是否已经修通的状态.现请你编写程序,计算出全省畅通需要的最低成本. Input 测试输入包含若干测试用例.每个测试用例的第1行给出村庄数目N ( 1< N < 100 ):随后的 N(N-1)/2 行对应村庄间道路的成本及修建状态,每行给4个正整…

Problem Description 相信大家都听说一个"百岛湖"的地方吧,百岛湖的居民生活在不同的小岛中,当他们想去其他的小岛时都要通过划小船来实现.现在政府决定大力发展百岛湖,发展首先要解决的问题当然是交通问题,政府决定实现百岛湖的全畅通!经过考察小组RPRush对百岛湖的情况充分了解后,决定在符合条件的小岛间建上桥,所谓符合条件,就是2个小岛之间的距离不能小于10米,也不能大于1000米.当然,为了节省资金,只要求实现任意2个小岛之间有路通即可.其中桥的价格为 100元/米.…

Problem Description 某省调查乡村交通状况,得到的统计表中列出了任意两村庄间的距离.省政府"畅通工程"的目标是使全省任何两个村庄间都可以实现公路交通(但不一定有直接的公路相连,只要能间接通过公路可达即可),并要求铺设的公路总长度为最小.请计算最小的公路总长度. Input 测试输入包含若干测试用例.每个测试用例的第1行给出村庄数目N ( < 100 ):随后的N(N-1)/2行对应村庄间的距离,每行给出一对正整数,分别是两个村庄的编号,以及此两村庄间的距离.为简…

Problem Description There is a strange lift.The lift can stop can at every floor as you want, and there is a number Ki(0 <= Ki <= N) on every floor.The lift have just two buttons: up and down.When you at floor i,if you press the button "UP"…

Problem Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a number line and the cow is at a point K (0 ≤ K ≤ 100,000) on the same number line. F…

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…

Problem Description Ignatius被魔王抓走了,有一天魔王出差去了,这可是Ignatius逃亡的好机会. 魔王住在一个城堡里,城堡是一个ABC的立方体,可以被表示成A个B*C的矩阵,刚开始Ignatius被关在(0,0,0)的位置,离开城堡的门在(A-1,B-1,C-1)的位置,现在知道魔王将在T分钟后回到城堡,Ignatius每分钟能从一个坐标走到相邻的六个坐标中的其中一个.现在给你城堡的地图,请你计算出Ignatius能否在魔王回来前离开城堡(只要走到出口就算离开城堡,…

Problem Description FatMouse believes that the fatter a mouse is, the faster it runs. To disprove this, you want to take the data on a collection of mice and put as large a subset of this data as possible into a sequence so that the weights are incre…

Problem Description 我们看到过很多直线分割平面的题目,今天的这个题目稍微有些变化,我们要求的是n条折线分割平面的最大数目.比如,一条折线可以将平面分成两部分,两条折线最多可以将平面分成7部分,具体如下所示. Input 输入数据的第一行是一个整数C,表示测试实例的个数,然后是C 行数据,每行包含一个整数n(0<n<=10000),表示折线的数量. Output 对于每个测试实例,请输出平面的最大分割数,每个实例的输出占一行. Sample Input 2 1 2 Sampl…

Problem Description 有一只经过训练的蜜蜂只能爬向右侧相邻的蜂房,不能反向爬行.请编程计算蜜蜂从蜂房a爬到蜂房b的可能路线数. 其中,蜂房的结构如下所示. Input 输入数据的第一行是一个整数N,表示测试实例的个数,然后是N 行数据,每行包含两个整数a和b(0<a<b<50). Output 对于每个测试实例,请输出蜜蜂从蜂房a爬到蜂房b的可能路线数,每个实例的输出占一行. Sample Input 2 1 2 3 6 Sample Output 1 3 Author…

Problem Description 有一头母牛,它每年年初生一头小母牛.每头小母牛从第四个年头开始,每年年初也生一头小母牛.请编程实现在第n年的时候,共有多少头母牛? Input 输入数据由多个测试实例组成,每个测试实例占一行,包括一个整数n(0<n<55),n的含义如题目中描述. n=0表示输入数据的结束,不做处理. Output 对于每个测试实例,输出在第n年的时候母牛的数量. 每个输出占一行. Sample Input 2 4 5 0 Sample Output 2 4 6 Auth…

Problem Description 在2×n的一个长方形方格中,用一个1× 2的骨牌铺满方格,输入n ,输出铺放方案的总数. 例如n=3时,为2× 3方格,骨牌的铺放方案有三种,如下图: Input 输入数据由多行组成,每行包含一个整数n,表示该测试实例的长方形方格的规格是2×n (0<n<=50). Output 对于每个测试实例,请输出铺放方案的总数,每个实例的输出占一行. Sample Input 1 3 2 Sample Output 1 3 2 Author lcy Source…

Problem Description 在上一回,我们让你猜测海东集团用地的形状,你猜对了吗?不管结果如何,都没关系,下面我继续向大家讲解海东集团的发展情况: 在最初的两年里,HDU发展非常迅速,综合各种ACM算法生成的老鼠药效果奇好,据说该药专对老鼠有效,如果被人误食了,没有任何副作用,甚至有传闻说还有健胃的效果,不过这倒没有得到临床验证.所以,公司的销量逐年递增,利润也是节节攀升,作为股东之一的公主负责财务,最近半年,她实在辛苦,多次因为点钞票造成双手抽筋而住院,现在在她面前你根本不要提到"…

Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher gives him a deadline of handing in the homework. If Ignatius hands in the homework after the deadline, the teacher will r…

题意:两个玩家玩一个游戏,从 p = 1,开始,然后依次轮流选择一个2 - 9的数乘以 p,问你谁先凑够 p >= n. 析:找规律,我先打了一下SG函数的表,然后就找到规律了 我找到的是: 1 - 9                                 Stan wins.                         1  ~  9 10 - 18                             Ollie wins.                         …

http://poj.org/problem?id=1651 题目大意:同“乘法游戏”,这里将乘法游戏的题面复制过来. 乘法游戏是在一行牌上进行的.每一张牌包括了一个正整数.在每一个移动中,玩家拿出一张牌,得分是用它的数字乘以它左边和右边的数,所以不允许拿第1张和最后1张牌.最后一次移动后,这里只剩下两张牌.你的目标是使得分的和最小. ——————————————————————————————————— 太水了…… (其实是以前做过,所以觉得水……) dp[i][j]表示i-j区间做乘法游戏得…