Alex_McAvoy的博客

Problem DescriptionEach person had do something foolish along with his or her growth.But,when he or she did this that time,they could not predict that this thing is a mistake and they will want thi...

Problem DescriptionCuber QQ always envies those Kejin players, who pay a lot of RMB to get a higher level in the game. So he worked so hard that you are now the game designer of this game. He decid...

Problem DescriptionRoundgod is a famous milk tea lover at Nanjing University second to none. This year, he plans to conduct a milk tea festival. There will be n classes participating in this festiv...

Problem DescriptionConsidering the overall difficulty of other problems, we invite Quailty to propose an easy problem for this contest.Quailty accidentally won both gold medal and silver medal in...

Problem DescriptionAcesrc is a famous mathematician at Nanjing University second to none. Playing with interesting numbers is his favorite. Today, he finds a manuscript when cleaning his room, whic...

Problem Description自从2006年3月10日至11日的首届数独世界锦标赛以后，数独这项游戏越来越受到人们的喜爱和重视。据说，在2008北京奥运会上，会将数独列为一个单独的项目进行比赛，冠军将有可能获得的一份巨大的奖品———HDU免费七日游外加lcy亲笔签名以及同hdu acm team合影留念的机会。所以全球人民前仆后继，为了奖品日夜训练茶饭不思。当然也包括初学者l...

Problem DescriptionSearch is important in the acm algorithm. When you want to solve a problem by using the search method, try to cut is very important.Now give you a number sequence, include n (&...

Problem Description Search is important in the acm algorithm. When you want to solve a problem by using the search method, try to cut is very important.Now give you a number sequence, incl...

Problem DescriptionFill the following 8 circles with digits 1~8,with each number exactly once . Conntcted circles cannot be filled with two consecutive numbers.There are 17 pairs of connected cic...

Problem Description PusherBoy is an online game http://www.hacker.org/push . There is an R * C grid, and there are piles of blocks on some positions. The goal is to clear the blocks by pushing i...

Problem DescriptionSailormoon girls all like eating many kinds of fruit, such as banana, grape, apple and so on.One day, when they was walking on a orchard, they found a magic apple tree.The magi...

Problem DescriptionA ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in two adjacent circles should be a prime....

Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the doggie could feel the ground sinking. ...

Problem Description 大家一定觉的运动以后喝可乐是一件很惬意的事情，但是seeyou却不这么认为。因为每次当seeyou买了可乐以后，阿牛就要求和seeyou一起分享这一瓶可乐，而且一定要喝的和seeyou一样多。但seeyou的手中只有两个杯子，它们的容量分别是N毫升和M毫升 可乐的体积为S毫升　(正好装满一瓶) ，它们三个之间可以相互倒可乐 (都是没有刻度的，且 ...

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 a...

Problem Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight moves that visits each square of a given set ...

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 d...

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 d...

Problem Description Angel's friends want to save Angel. Their task is: approach Angel. We assume that approach Angel is to get to the position where Angel stays. When there's a guard in the grid...

Problem Description The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and crea...

Problem Description 在美式足球中，四分卫负责指挥整只球队的进攻战术和跑位，以及给接球员传球的任务。四分卫是一只球队进攻组最重要的球员，而且一般身体都相对比较弱小，所以通常球队会安排5-7名大汉来保护他，其中站在四分卫前方、排成一线的5名球员称为进攻锋线，他们通常都是135公斤左右的壮汉。对防守方来说，攻击对手的四分卫当然是最直接的限制对手进攻的方法。如果...

Problem Description “连连看”相信很多人都玩过。没玩过也没关系，下面我给大家介绍一下游戏规则：在一个棋盘中，放了很多的棋子。如果某两个相同的棋子，可以通过一条线连起来（这条线不能经过其它棋子），而且线的转折次数不超过两次，那么这两个棋子就可以在棋盘上消去。不好意思，由于我以前没有玩过连连看，咨询了同学的意见，连线不能从外面绕过去的，但事实上这是错的。现在已经酿成大祸...

Problem Description A有一个数m，B来猜。B每猜一次，A就说太大、太小或对了。问B猜n次可以猜到的最大数。Input 第1行是整数T,表示有T组数据，下面有T行每行一个整数n (1 ≤ n ≤ 30)Output 猜n次可以猜到的最大数Sample Input213Sa...

Problem Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to organize the most honest contest ...

Problem Description In a two-dimensional plane there are two line belts, there are two segments AB and CD, lxhgww's speed on AB is P and on CD is Q, he can move with the speed R on other area on...

Problem Description Mr. West bought a new car! So he is travelling around the city.One day he comes to a vertical corner. The street he is currently in has a width x, the street he wants t...

Problem Description The recreation center of WHU ACM Team has indoor billiards, Ping Pang, chess and bridge, toxophily, deluxe ballrooms KTV rooms, fishing, climbing, and so on.We all like...

Problem DescriptionMy birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a number N of them, of various tastes and of various sizes. F of my friends are comin...

Problem DescriptionNow, here is a fuction:F(x) = 6 * x^7+8*x^6+7*x^3+5*x^2-y*x (0 <= x <=100)Can you find the minimum value when x is between 0 and 100.InputThe first line o...

Problem DescriptionNow,given the equation 8*x^4 + 7*x^3 + 2*x^2 + 3*x + 6 == Y,can you find its solution between 0 and 100;Now please try your lucky.InputThe first line of the inpu...

Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence.For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + ...

Problem Description A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = &lt;x1, x2, ..., xm&gt;,another sequence Z = &lt;z1, ...

Problem Description Nowadays, a kind of chess game called “Super Jumping! Jumping! Jumping!” is very popular in HDU. Maybe you are a good boy, and know little about this game, so I introduce it t...

Problem Description A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the ...

Problem Description A group of researchers are designing an experiment to test the IQ of a monkey. They will hang a banana at the roof of a building, and at the mean time, provide the monkey with...

Problem Description 在讲述DP算法的时候，一个经典的例子就是数塔问题，它是这样描述的：有如下所示的数塔，要求从顶层走到底层，若每一步只能走到相邻的结点，则经过的结点的数字之和最大是多少？已经告诉你了，这是个DP的题目，你能AC吗?Input 输入数据首先包括一个整数C,表示测试实例的个数，每个测试实例的第一行是一个整数N(1 ...

Problem Description 都说天上不会掉馅饼，但有一天gameboy正走在回家的小径上，忽然天上掉下大把大把的馅饼。说来gameboy的人品实在是太好了，这馅饼别处都不掉，就掉落在他身旁的10米范围内。馅饼如果掉在了地上当然就不能吃了，所以gameboy马上卸下身上的背包去接。但由于小径两侧都不能站人，所以他只能在小径上接。由于gameboy平时老呆在房间里玩游戏，虽然在...

Problem Description 穿过幽谷意味着离大魔王lemon已经无限接近了！可谁能想到，yifenfei在斩杀了一些虾兵蟹将后，却再次面临命运大迷宫的考验，这是魔王lemon设下的又一个机关。要知道，不论何人，若在迷宫中被困1小时以上，则必死无疑！可怜的yifenfei为了去救MM，义无返顾地跳进了迷宫。让我们一起帮帮执着的他吧！命运大迷宫可以看成是一个两维的方格...

Problem Description 有一楼梯共M级，刚开始时你在第一级，若每次只能跨上一级或二级，要走上第M级，共有多少种走法？Input 输入数据首先包含一个整数N，表示测试实例的个数，然后是N行数据，每行包含一个整数M（1&lt;=M&lt;=40）,表示楼梯的级数。Output 对于每个测试实例，请输出不同走法的数量Sample Input2...

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，...