Close Enough Computations Problem Description The nutritional food label has become ubiquitous. A sample label is shown to the right. On the label the number of calories and the number of grams of fat, carbohydrate, and protein are given as integers.…

Close Enough Computations 题目连接: https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2193 Descriptionww.co The nutritional food label has become ubiquitous. A sample label is shown to the right…

Pokémon GO Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 171    Accepted Submission(s): 104 Problem Description 众所周知,度度熊最近沉迷于 Pokémon GO. 今天它决定要抓住所有的精灵球! 为了不让度度熊失望,精灵球已经被事先放置在一个2*N的格子上,每一个格子上都…

Balls and Boxes 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5810 Description Mr. Chopsticks is interested in random phenomena, and he conducts an experiment to study randomness. In the experiment, he throws n balls into m boxes in such a manner t…

WisKey的眼神 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2059    Accepted Submission(s): 625 Problem Description WisKey的眼镜有500多度,所以眼神不大好,而且他有个习惯,就是走路喜欢看着地(不是为了拣钱哦^_^),所以大家下次碰见他的时候最好主动打下招呼,呵呵.但是…

这道题比赛中没做出来,赛后搞了好久才出来的,严重暴露的我薄弱的数学功底, 这道题要推公式的,,,有类似于1*a+2*a^2+3*a^3+...+n*a^n的数列求和. 最后画了一张纸才把最后的结果推出来.::(x*M^x)/N. 而且通过这道题我发现有些数学函数还不如直接循环来的快, 例如这道题中求x的值的时候. [我在此收回前面的话,昨天是oj的问题,今天我又交了一遍log的代码,耗时变成了0ms了...OMG] 方法一: int x = int(log(n)/log(m)+0.5);    …

GCD is Funny 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5902 Description Alex has invented a new game for fun. There are n integers at a board and he performs the following moves repeatedly: He chooses three numbers a, b and c written at the boa…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=4969 Just a Joke Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 332    Accepted Submission(s): 135 Problem Description Here is just a joke, and do…

Hard problem 题目链接: http://acm.split.hdu.edu.cn/showproblem.php?pid=5858 Description cjj is fun with math problem. One day he found a Olympic Mathematics problem for primary school students. It is too difficult for cjj. Can you solve it? Give you the…

GCD and LCM Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4497 Description Given two positive integers G and L, could you tell me how many solutions of (x, y, z) there are, satisfying that gcd(x, y, z) = G and…