Problem Description Bean-eating is an interesting game, everyone owns an M*N matrix, which is filled with different qualities beans. Meantime, there is only one bean in any 1*1 grid. Now you want to eat the beans and collect the qualities, but everyo…

Problem Description Bean-eating is an interesting game, everyone owns an M*N matrix, which is filled with different qualities beans. Meantime, there is only one bean in any 1*1 grid. Now you want to eat the beans and collect the qualities, but everyo…

Problem Description A password locker with N digits, each digit can be rotated to 0-9 circularly.You can rotate 1-3 consecutive digits up or down in one step.For examples:567890 -> 567901 (by rotating the last 3 digits up)000000 -> 000900 (by rotati…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3008 题目大意:人有100血和100魔法,每秒增加 t 魔法(不能超过100).n个技能,每个技能消耗cost[i]魔法值,造成hurt[i]伤害.普通攻击不消耗魔法,每秒1伤害. boss有100血,每秒对人造成q伤害.每秒内,人先攻击,boss后攻击.问最少多少秒杀死boss? Sample Input 4 2 25 10 5 20 10 30 28 76 70 4 2 25 10 5 20 1…

龟兔赛跑 Problem Description 据说在很久很久以前,可怜的兔子经历了人生中最大的打击——赛跑输给乌龟后,心中郁闷,发誓要报仇雪恨,于是躲进了杭州下沙某农业园卧薪尝胆潜心修炼,终于练成了绝技,能够毫不休息得以恒定的速度(VR m/s)一直跑.兔子一直想找机会好好得教训一下乌龟,以雪前耻. 最近正值HDU举办50周年校庆,社会各大名流齐聚下沙,兔子也趁此机会向乌龟发起挑战.虽然乌龟深知获胜希望不大,不过迫于舆论压力,只能接受挑战. 比赛是设在一条笔直的道路上,长度为L米,规则很简单…

Chess Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 24    Accepted Submission(s): 10 Problem Description 小度和小良最近又迷上了下棋.棋盘一共有N行M列,我们可以把左上角的格子定为(1,1),右下角的格子定为(N,M).在他们的规则中,“王”在棋盘上的走法遵循十字路线.也就是说,…

题意:给n(n<=100,000)个数,0<=a[i]<=2048 .一个好的集合要满足,集合内的数可以根据2048的合并规则合并成2048 .输出好的集合的个数%998244353 . 比赛的时候想着1跟3可以合并成4 ....然后就越搞越复杂了.....2048玩得不多的我没有透彻的合并规则概念..... 看了题解写了发,妥妥地TLE...本地随意n=100,000都TLE了... 用dp[i][j]表示当前 i个2^j 的方案数 然后队友提醒优化,就是,当枚举到比如,value =…

题意:已知原串(长度为1~1000),它由多个单词组成,每个单词除了首尾字母,其余字母为乱序,且句子中无空格.给定n个互不相同的单词(1 <= n <= 10000),问是否能用这n个单词还原出这个句子. eg: 3 tihssnetnceemkaesprfecetsesne 5 makes perfect sense sentence this hitehre应输出唯一解:this sentence makes perfect sense 分析: 1.将原串从头到尾遍历,分别以原串中的每个字…

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阵列,如下图所示:   yifenfei一开始在左上角,目的当然是到达右下角的大魔王所在地.迷宫的每一个格子都受到幸…

题目链接 Problem Description Giving two strings and you should judge if they are matched.The first string contains lowercase letters and uppercase letters.The second string contains lowercase letters, uppercase letters, and special symbols: “.” and “*”..…