摘要：
1.做BFS时要记录路径。 2.注意模的性质~~~大佬给我说的 阅读全文
摘要：
1.kmp找到后替换即可 阅读全文
摘要：
1.建一颗字典树，然后依次查找 2.要delete，因为new的关系。 3.可以先把这道题做了：Xor Sum HDU - 4825 阅读全文
摘要：
Problem Description Given a list of phone numbers, determine if it is consistent in the sense that no number is the prefix of another. Let’s say the p 阅读全文
摘要：
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统计的单词,一 阅读全文
摘要：
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 阅读全文
摘要：
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 阅读全文
摘要：
Given two sequences of numbers : a11 , a22 , ...... , aNN , and b11 , b22 , ...... , bMM (1 <= M <= 10000, 1 <= N <= 1000000). Your task is to find a 阅读全文
摘要：
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 阅读全文
摘要：
Farmer John's N (1 <= N <= 50,000) cows (numbered 1..N) are planning to run away and join the circus. Their hoofed feet prevent them from tightrope wa 阅读全文