Trie的应用题目. 本题有两个难点了: 1 动态建立Trie会超时,须要静态建立数组,然后构造树 2 推断的时候注意两种情况: 1) Tire树有133,然后插入13333556的时候.2)插入顺序倒转过来的时候 改动一下标准Trie数的插入函数就能够了: #include <stdio.h> #include <string.h> const int MAX_NODE = 100001; const int MAX_WORD = 11; const int ARR_SIZE =…

题目: 给定 n 个长度不超过 10 的数字串,问其中是否存在两个数字串 S, T ,使得 S 是 T 的前缀.多组数据,数据组数不超过 40. 题解: 前缀问题一般都用Trie树解决: 所以跑一个Tire树,记录一下每个节点是不是结尾就好 #include<cstdio> #include<algorithm> #include<cstring> #define N 100010 #define Z 10 using namespace std; int T,n,to…

Phone List 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 phone catalogue listed these numbers: Emergency 911 Alice 97 625 999 Bob 91 12 54 26 In this case,…

地址 http://poj.org/problem?id=2431 题解 朴素想法就是dfs 经过该点的时候决定是否加油 中间加了一点剪枝 如果加油次数已经比已知最少的加油次数要大或者等于了 那么就剪枝 然而 还是TLE了 TLE代码 #include <iostream> #include <vector> #include <algorithm> #include <queue> using namespace std; vector<pair&l…

地址 http://poj.org/problem?id=1064 题解 二分即可 其实 对于输入与精度计算不是很在行 老是被卡精度 后来学习了一个函数 floor 向负无穷取整 才能ac 代码如下 #include <iostream> #include <vector> #include <math.h> #include <algorithm> using namespace std; vector<double> v; int n, k;…

题目链接:http://poj.org/problem?id=3630 题意:给你多个字符串,如果其中任意两个字符串满足一个是另一个的前缀,那么输出NO,否则输出YES 思路:简单的trie树应用,插入的过程中维护到当前节点是不是字符串这个布尔量即可,同时判断是否存在上述情况. code: #include <iostream> #include <cstdio> #include <string> #include <cstring> using name…

Phone List Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 26559 Accepted: 8000 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 phone catalogue li…

Phone List Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 29416   Accepted: 8774 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 phone catalogu…

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 phone catalogue listed these numbers: Emergency 911 Alice 97 625 999 Bob 91 12 54 26 In this case, it's not p…

Phone List Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 25280   Accepted: 7678 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 phone catalogu…