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
- modSecurity规则学习(四)——规则指令编写
规则语言是使用9个指令实现: 语法:SecRule VARIABLES OPERATOR [TRANSFORMATION_FUNCTIONS, ACTIONS] Variables 以下几种: Reg ...
- Day2代码
#include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #defi ...
- R学习:《R语言数据分析与挖掘实战》PDF代码
分三个部分:基础篇.实战篇.提高篇.基础篇介绍了数据挖掘的基本原理,实战篇介绍了一个个真实案例,通过对案例深入浅出的剖析,使读者在不知不觉中通过案例实践获得数据挖掘项目经验,同时快速领悟看似难懂的数据 ...
- django项目所遇问题总结
2. 关于设置static静态文件,样式失效问题 原因: 可能开启多个端口号,页面显示访问的不是已经设置了static的模板,所以,样式没有显示 3. models模型中gender字段的选择设置 c ...
- STM32的IO口的8种配置
STM32的IO口的8种配置 1 STM32的输入输出管脚有以下8种可能的配置:(4输入+2输出+2复用输出) ① 浮空输入_IN_FLOATING ② 带上拉输入_IPU ③ 带下拉输入_IPD ④ ...
- BZOJ 2708 [Violet 1]木偶 DP
题意:id=2708">链接 方法: DP 解析: 这题太神辣. 做梦都没想到DP啊,反正我不会. 先谈一个我有过的错的想法. 最小费用最大流? 能匹配的边连费用为1的,不能匹配的连费 ...
- Java io流的学习
近期几天细致学了Java的io流.本来是打算看视频通过视频来学习的.但是后来发现事实上视频看不怎么懂也感觉不是非常easy上手,所以就通过百度和api文档学习了Java的io流 io流能够有两个分类, ...
- 深入理解Android(4)——理解Android中的JNI(下)
在前面文章中简单介绍了JNI,这一篇文章来简单看一下jni.h中定义的一些常用方法,来实现通过C++调用Android中的Java代码. 转载请说明出处:http://blog.csdn.net/da ...
- Cisco Works 2000 网络管理软件安装、配置全过程
下面是在windows 2000 server 下安装ciscoworks 2000的过程.(附件中是标准avi格式文件,由于上传附件大小限制,更多内容见Sina播客) 浏览全部原创视频请见: htt ...
- 戏说Linux商用数据库
戏说Linux商用数据库 上一篇文章(http://chenguang.blog.51cto.com/350944/277533)我介绍了Linux下几款开源数据库Mysql,MaxDB.Postgr ...