F.A.Q
Hand In Hand
Online Acmers
Problem Archive
Realtime Judge Status
Authors Ranklist
 
     C/C++/Java Exams     
ACM Steps
Go to Job
Contest LiveCast
ICPC@China
Best Coder beta
VIP | STD Contests
    DIY | Web-DIY beta
Author ID 
Password 
 Register new ID

Simple Library Management System

Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 5381    Accepted Submission(s): 1370


Problem Description
After AC all the hardest problems in the world , the ACboy 8006 now has nothing to do . One day he goes to an old library to find a part-time job .It is also a big library which has N books and M users.The user's id is from 1 to M , and the book id is from 1 to N . According to the library rules , every user are only allowed to borrow 9 books .But what surprised him is that there is no computer in the library , and everything is just recorded in paper ! How terrible , I must be crazy after working some weeks , he thinks .So he wants to change the situation .

In the other hand , after 8006's fans know it , they all collect money and buy many computers for the library .

Besides the hardware , the library needs a management program . Though it is just a piece of cake for 8006 , the library turns to you , a excellent programer,for help .

What they need is just a simple library management program . It is just a console program , and have only three commands : Borrow the book , Return the book , Query the user .

1.The Borrow command has two parameters : The user id and the book id
The format is : "B ui bi" (1<=ui<=M , 1<=bi<=N)
The program must first check the book bi wether it's in the library . If it is not , just print "The book is not in the library now" in a line .
If it is , then check the user ui .
If the user has borrowed 9 books already, print "You are not allowed to borrow any more" .
Else let the user ui borrow the book , and print "Borrow success".

2.The Return command only has one parameter : The book id
The format is : "R bi" (1<=bi<=N)
The program must first check the book bi whether it's in the library . If it is , just print "The book is already in the library" . Otherwise , you can return the book , and print "Return success".

3.The Query command has one parameter : The user id
The format is : "Q ui" (1<=ui<=M)
If the number of books which the user ui has borrowed is 0 ,just print "Empty" , otherwise print the books' id which he borrows in increasing order in a line.Seperate two books with a blank.
 

Input
The input file contains a series of test cases . Please process to the end of file . The first line contains two integers M and N ( 1<= M <= 1000 , 1<=N<=100000),the second line contains a integer C means the number of commands(1<=C<=10000). Then it comes C lines . Each line is a command which is described above.You can assum all the books are in the library at the beginning of each cases.
 

Output
For each command , print the message which described above .
Please output a blank line after each test.
If you still have some questions , see the Sample .
 

Sample Input
5 10 9 R 1 B 1 5 B 1 2 Q 1 Q 2 R 5 Q 1 R 2 Q 1 5 10 9 R 1 B 1 5 B 1 2 Q 1 Q 2 R 5 Q 1 R 2 Q 1
 

Sample Output
The book is already in the library Borrow success Borrow success 2 5 Empty Return success 2 Return success Empty The book is already in the library Borrow success Borrow success 2 5 Empty Return success 2 Return success Empty Huge input, the function scanf() may work better than cin
 

Hint
Hint
 

Author
linle
 

Source
 

Statistic | Submit | Discuss | Note
Hangzhou Dianzi University Online Judge 3.0
Copyright © 2005-2024 HDU ACM Team. All Rights Reserved.
Designer & Developer : Wang Rongtao LinLe GaoJie GanLu
Total 0.000000(s) query 1, Server time : 2024-04-25 23:30:39, Gzip enabled