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(共388篇)
LightOJ1234——Harmonic Number
In mathematics, the nth harmonic number is the sum of the reciprocals of the first n natural numbers: In this problem, you are given n, you have to...
2021-04-05
0
419
hdu1686——Oulipo
The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter ‘e’. He was a member of the Oulipo group. A quote fr...
2021-04-05
0
491
hdu3746——Cyclic Nacklace
CC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are only 99.9 yuan le...
2021-04-05
0
539
hdu1358——Period
For each prefix of a given string S with N characters (each character has an ASCII code between 97 and 126, inclusive), we want to know whether the pr...
2021-04-05
0
441
poj2406——Power Strings
Given two strings a and b we define a*b to be their concatenation. For example, if a = “abc” and b = “def” then a*b = “abcdef”. If we think of concate...
2021-04-05
0
594
hdu2594——Simpsons’ Hidden Talents
Homer: Marge, I just figured out a way to discover some of the talents we weren’t aware we had. Marge: Yeah, what is it? Homer: Take me for example....
2021-04-05
0
744
hdu1238——Substrings
You are given a number of case-sensitive strings of alphabetic characters, find the largest string X, such that either X, or its inverse can be found ...
2021-04-05
0
544
hdu2328——Corporate Identity
Beside other services, ACM helps companies to clearly state their “corporate identity”, which includes company logo but also other signs, like tradema...
2021-04-05
0
422
hdu1251——统计难题
Ignatius最近遇到一个难题,老师交给他很多单词(只有小写字母组成,不会有重复的单词出现),现在老师要他统计出以某个字符串为前缀的单词数量(单词本身也是自己的前缀). Input 输入数据的第一部分是一张单词表,每行一个单词,单词的长度不超过10,它们代表的是老师交给Ignatius统计的单...
2021-04-05
0
566
hdu2094——产生冠军
有一群人,打乒乓球比赛,两两捉对撕杀,每两个人之间最多打一场比赛。 球赛的规则如下: 如果A打败了B,B又打败了C,而A与C之间没有进行过比赛,那么就认定,A一定能打败C。 如果A打败了B,B又打败了C,而且,C又打败了A,那么A、B、C三者都不可能成为冠军。 根据这个规则,无需循环较量,或...
2021-04-05
0
619
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