字典树---2001 POJ Shortest Prefixes(找最短前缀)

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字典树---2001 POJ Shortest Prefixes(找最短前缀)

做的第一道字典树的题,算比较水的: -->>>:传送门代码: #include <stdio.h> #include<stdlib.h> #define MAX 26 //using namespace std; typedef struct TrieNode //Trie结点声明 { //bool isStr; int count; //标记该结点处是否构成单词 struct TrieNode *next[MAX]; //儿子分支 }Trie; void in…

poj 2001:Shortest Prefixes（字典树，经典题，求最短唯一前缀）

Shortest Prefixes Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 12731 Accepted: 5442 Description A prefix of a string is a substring starting at the beginning of the given string. The prefixes of "carbon" are: "c", &qu…

POJ 2001：Shortest Prefixes

Shortest Prefixes Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 16782 Accepted: 7286 Description A prefix of a string is a substring starting at the beginning of the given string. The prefixes of "carbon" are: "c", &qu…

nyoj 163 Phone List(动态字典树<trie>) poj Phone List (静态字典树<trie>)

Phone List 时间限制:1000 ms | 内存限制:65535 KB 难度:4 描述 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 phone catalogue listed these numbers: Emergency 911 Alice 97 625 999…

BZOJ 3483 SGU505 Prefixes and suffixes（字典树+可持久化线段树）

[题目链接] http://www.lydsy.com/JudgeOnline/problem.php?id=3483 [题目大意] 给出一些串,同时给出m对前缀后缀,询问有多少串满足给出的前缀后缀模式, 题目要求强制在线 [题解] 我们对于给出的每个字符串正着插入字典树A,倒着插入字典树B, 对于一个前缀来说,在字典树A上得到的dfs序[st,en]就是所有的匹配串, 同理,后缀在字典树B上dfs序[st,en]表示所有的后缀匹配串, 同时满足两者的需提供二维查询,因此我们以Adfsn为版本,…

hdu-5536（字典树）

题意:给你n个数,让你在n个数中选三个,使得(a1+a2)^a3的值最大,a1!=a2!=a3(下标不等于): 解题思路:01字典树可以写,因为数据小,我们可以先把n个数建一颗字典树,然后两边for找a1+a2,扔到字典树中,但是这道题因为不能相同,所以有一个操作,每当我们扔一个a1+a2的时候,我们需要把a1和a2在树中删除,因为万一和a1能够成最大异或值,那么不合题意,在每次结束后,再把a1,a2加回来: 代码: #include<iostream> #include<cstdio&…

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字典树应用 - poj 1002 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialing the memorab…