Codefroces 832B Petya and Exam
2 seconds
256 megabytes
standard input
standard output
It's hard times now. Today Petya needs to score 100 points on Informatics exam. The tasks seem easy to Petya, but he thinks he lacks time to finish them all, so he asks you to help with one..
There is a glob pattern in the statements (a string consisting of lowercase English letters, characters "?" and "*"). It is known that character "*" occurs no more than once in the pattern.
Also, n query strings are given, it is required to determine for each of them if the pattern matches it or not.
Everything seemed easy to Petya, but then he discovered that the special pattern characters differ from their usual meaning.
A pattern matches a string if it is possible to replace each character "?" with one good lowercase English letter, and the character "*" (if there is one) with any, including empty, string of bad lowercase English letters, so that the resulting string is the same as the given string.
The good letters are given to Petya. All the others are bad.
The first line contains a string with length from 1 to 26 consisting of distinct lowercase English letters. These letters are good letters, all the others are bad.
The second line contains the pattern — a string s of lowercase English letters, characters "?" and "*" (1 ≤ |s| ≤ 105). It is guaranteed that character "*" occurs in s no more than once.
The third line contains integer n (1 ≤ n ≤ 105) — the number of query strings.
n lines follow, each of them contains single non-empty string consisting of lowercase English letters — a query string.
It is guaranteed that the total length of all query strings is not greater than 105.
Print n lines: in the i-th of them print "YES" if the pattern matches the i-th query string, and "NO" otherwise.
You can choose the case (lower or upper) for each letter arbitrary.
ab
a?a
2
aaa
aab
YES
NO
abc
a?a?a*
4
abacaba
abaca
apapa
aaaaax
NO
YES
NO
YES
In the first example we can replace "?" with good letters "a" and "b", so we can see that the answer for the first query is "YES", and the answer for the second query is "NO", because we can't match the third letter.
Explanation of the second example.
- The first query: "NO", because character "*" can be replaced with a string of bad letters only, but the only way to match the query string is to replace it with the string "ba", in which both letters are good.
- The second query: "YES", because characters "?" can be replaced with corresponding good letters, and character "*" can be replaced with empty string, and the strings will coincide.
- The third query: "NO", because characters "?" can't be replaced with bad letters.
- The fourth query: "YES", because characters "?" can be replaced with good letters "a", and character "*" can be replaced with a string of bad letters "x".
模拟题,注意如果模式串中没有*,串长相等才能匹配,如果有*,模式串串长要大于主串串长减1才匹配
#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <vector>
#include <queue>
#include <cstdlib>
#include <iomanip>
#include <cmath>
#include <ctime>
#include <map>
#include <set>
using namespace std;
#define lowbit(x) (x&(-x))
#define max(x,y) (x>y?x:y)
#define min(x,y) (x<y?x:y)
#define MAX 100000000000000000
#define MOD 1000000007
#define pi acos(-1.0)
#define ei exp(1)
#define PI 3.141592653589793238462
#define ios() ios::sync_with_stdio(false)
#define INF 0x3f3f3f3f3f
#define mem(a) (memset(a,0,sizeof(a)))
typedef long long ll;
int n,i,j,al,bl,y;
string a,b,c(,);
int main()
{
cin>>a;
for(int k=;k<a.size();k++)
{
c[a[k]]=;
}
cin>>a;al=a.size();
cin>>n;
while(n--)
{
cin>>b;bl=b.size();y=;
for(i=j=;y && i<al;i++)//没有*模式串匹配穿必须长度相等。
{
if(a[i]=='*')//有*模式串要大于主串串长减一才行,可以匹配为空
{
while(j<bl-(al-i-))
if(c[b[j++]]) y=;
}
else if(a[i]=='?'?c[b[j]]:a[i]==b[j])
j<bl?j++:y=;
else y=;
}
if(j<bl) y=;
puts(y?"YES":"NO");
}
return ;
}
Codefroces 832B Petya and Exam的更多相关文章
- CodeForces 832B Petya and Exam
B. Petya and Exam time limit per test 2 seconds memory limit per test 256 megabytes input standard i ...
- 832B Petya and Exam
题意:给你两个串,第一个串里面的字母都是good 字母, 第二个串是模式串,里面除了字母还有?和*(只有一个) ?可以替换所有good字母, *可以替换所有坏字母和空格(可以是多个坏字母!!!这点卡了 ...
- E - Petya and Exam CodeForces - 832B 字典树+搜索
E - Petya and Exam CodeForces - 832B 这个题目其实可以不用字典树写,但是因为之前写过poj的一个题目,意思和这个差不多,所以就用字典树写了一遍. 代码还是很好理解的 ...
- CodeForces832-B. Petya and Exam
补的若干年以前的题目,水题,太菜啦_(:з」∠)_ B. Petya and Exam time limit per test 2 seconds memory limit per test 2 ...
- Codeforces Round #425 (Div. 2) B. Petya and Exam(字符串模拟 水)
题目链接:http://codeforces.com/contest/832/problem/B B. Petya and Exam time limit per test 2 seconds mem ...
- Codeforces Round #425 (Div. 2) B - Petya and Exam
地址:http://codeforces.com/contest/832/problem/B 题目: B. Petya and Exam time limit per test 2 seconds m ...
- B. Petya and Exam
B. Petya and Exam 题目链接 题意 给你一串字符,在这个串中所有出现的字符都是\(good\)字符,未出现的都是\(bad\)字符, 然后给你另一串字符,这个字符串中有两个特殊的字符, ...
- Codeforces Round #425 (Div. 2) Problem B Petya and Exam (Codeforces 832B) - 暴力
It's hard times now. Today Petya needs to score 100 points on Informatics exam. The tasks seem easy ...
- CF832B Petya and Exam
思路: 模拟. 实现: #include <iostream> using namespace std; string a, b; ]; bool solve() { ) return f ...
随机推荐
- Using a Plugin
创建hello.world <?xml version="1.0"?> <sdf version="1.4"> <world na ...
- 在kettle中实现数据验证和检查
在kettle中实现数据验证和检查 在ETL项目,输入数据通常不能保证一致性.在kettle中有一些步骤能够实现数据验证或检查.验证步骤能够在一些计算的基础上验证行货字段:过滤步骤实现数据过滤:jav ...
- WebForms简介
http://www.w3school.com.cn/aspnet/aspnet_intro.asp ASP.NET 是下一代 ASP,不是 ASP 的更新版本. https://docs.micro ...
- 关于viewport详解
- 记一次 Apache HUE 优化之因使用 Python 魔术方法而遇到的坑
最近的工作是基于 Apache HUE 做二次开发.刚接手 HUE 的代码的时候,内心是崩溃的:开源的代码,风格很多种, 代码比较杂乱; 虽是基于 Django 开发的,但是项目的结构改变很大; 很多 ...
- azure云中 mount: wrong fs type, bad option, bad superblock on /dev/sdc1
2016-01-30 mount失败问题解决 [root@mofficedb2 ~]# mount /dev/sdc /dta mount: you must specify the filesyst ...
- [c++]基类对象作为函数參数(赋值兼容规则)
编程处理教师的基本情况. 要求: 1.定义一个"person"类.用来存储及处理人的姓名.性别.年龄,成员函数自定: 2.定义"teacher"类,公有继承&q ...
- zoj 1119 / poj 1523 SPF (典型例题 求割点 Tarjan 算法)
poj : http://poj.org/problem?id=1523 如果无向图中一个点 u 为割点 则u 或者是具有两个及以上子女的深度优先生成树的根,或者虽然不是一个根,但是它有一个子女 w, ...
- js --- 事件流
1.事件流 事件发生时会在元素节点与根节点之间按照特定的顺序传播,路径所经过的所有节点都会收到该事件,这个传播过程即DOM事件流. 2.两种事件流模型 1.冒泡型事件流:事件的传播是从最特定的事件目标 ...
- html --- rem 媒体查询
rem是一种相对长度单位,参考的基准是<html>标签定义的font-size. viewport 做移动端的h5,通常会在HTML文件中指定一个<meta>标签: <m ...