Written 2017

Competition environment and competition rules

NOI operating system test machine used is: Linux
Linux for renaming files using the command: mv <old file name> <new filename>
In Linux, the command returns a directory using: cd.
Delete test directory under the current directory in Linux command is: rm -r test
There is a current directory compiled executable file a.out, execute command it used to be: ./ a.out
Use high-level language program called: source
Program in NOI Linux systems can be used to debug the program is: gdb
In the Linux system, the file in the folder with the same name as the file folder can do: You can
Linux system to kill the background process named test command is: killall test
Linux systems can view hidden files the command is: ls -a
Linux system compiler to compile C program is: gcc
Linux system to compile Pascal compiler program are: fpc
Linux system to compile C ++ compiler program is: g ++
Linux system, the file name in the current directory to tmp file print command is: ls> tmp
Linux system, measuring the current directory program test run time command is: time ./test
vim editor, forced to quit without saving changes should enter :: q!
vim editor, forced to exit and save the changes can be entered in one of three command :: wq, ZZ,: x
vim editor, to locate the file should be entered on line 12 :: 12
vim editor, find the file in the string "12" is to be input: / 12
When using gcc C compiler program, debug information generated command line options are: -g
When using gcc C compiler program generates a warning message to all command-line options are: -Wall
When using gcc C compiler program, only compiled object file command line options are: -c
When using gcc to compile C program, specify the output file name of the command-line options are: -o
If C programs use a function in math.h, you need to add at compile time options: -lm
Linux system user with the highest authority is: root
Shortcut between the various Linux virtual console switching is: Ctrl + Alt + F [1-6]
In NOI Linux, the switch back to using shortcuts from the desktop environment character console is: Ctrl + Alt + F7
Use the default in the NOI Linux Shell is: bash
View command in the current system used by the process in Linux is: ps
View the process in Linux command CPU utilization using: ps
If your program into an infinite loop, how shall terminate: Ctrl-C
A.out executable file from the read standard input. An existing set of input data stored in 1.in, using this test
data files to test their program commands are: ./ a.out <1.in
Prog_1 executable file to standard output the results. Save the output to a file using the 1.out
command: ./ prog_1> 1.out
Use the Reset button to force the computer to restart the consequences that might cause the system: File system corruption
The size of the command in the Linux system, is used to view files: ls -l
Current directory the following files
-rw-R & lt - r--. 1 8.7K Jul-2 16:35 None User foobar
-rw-R & lt - r--. 1 User 2 None Jul-93 16:35 foobar.c and
-rwx- ----- 1 user None 144 Jul 2 16:35 foobar.sh
wherein the file can be executed: foobar.sh
Evaluation system program source file size limit is: less than 100KB
Unless otherwise noted, the evaluation used in the system memory limitations of the program are: limited hardware resources
Newline character under Linux are: \ n
Failing to respond to terminate a process ($ pid represents the process ID) of the command is: kill $ pid
Whether the Linux file and directory names are case sensitive: Yes
Players in NOI during the machine test whether prohibiting the use of network: a
When you create a backup myc.bak for the program my.c, use the command: cp my.c myc.bak
Anjuta in the debugger, the shortcut key is to continue: F4
Start shortcut to run the program in Lazarus is: F9
Anjuta debugger, the shortcuts single step (Step over) are: F6
In the Lazarus debugger shortcuts single step (Step over) are: F8
The method of debugging are: single-step debugging, use the print result of the print intermediate class statement, read the source code.
If you need to use single-step debugging on Lazarus, then: Configuration in Environment-> Debugger Options in
During the exam, if the event of a system crash or crashes, measures should be taken by the players: a show of hands supervisor
examiners processing
The answer program submitted if it contains NOI exam expressly prohibited the use of the code, the consequences are: The problem with the calculation results 0
Linux distributions NOI game using: NOI Linux
The evaluation results on doubt, need to apply for re-evaluation, then: Apply in writing, and by the team leader, the staff concerned, Scientific
after the Chairman to sign it, and then submitted to the reviewers
Re-evaluation scores have changed compared to the original score, then: subject to re-evaluation results
Pascal if there are integer and long integer type and length of the relationship compiler option: a relationship
NOI examination there are restrictions on the use of C ++ language templates do? No
NOI exam have restrictions on the use of language PASCAL it? Have
File and the file name FILE name File is considered in the Linux system are: different files
DIRECT Direct catalog and directory in the Linux system is considered to be: a different directory
How to log in to your racing machine NOI official exams: exam made use of staff under account and password
If the exam includes multi-day conduct, then the player's account and password test: by the staff at the beginning of each test before send
After the exam, how to deal with codebar: Save Password strip for retest.
Save the file directory of the players answer is: the same name and directory exam players directory
File name requires players answer is: As shown in the title and summary file papers in the name of the same
Players answer file names wrong case, the results will happen: 0
Whether the source code files submitted by players with special requirements: the name of the source file name from the abbreviation questions suffix configuration, test
questions and abbreviated name suffix All lower
In NOI examination, the extension of Pascal source file is specified as: pas
In NOI examination, the extension of the C source file is defined as: c
In NOI examination, the extension of the provisions of C ++ source file is: cpp
Find the mouse or other hardware device has a problem, players can: Please replace staff
There is a problem of comprehension questions, players can: a show of hands to help staff
After the exam players need: to leave quickly
Still be able to submit an application for review after the re-evaluation: not
Meaning test point refers to the time limit: the upper limit of the sum of the subject to allow the user program running time occupied.
Under what circumstances players can apply for an extension test of time: the machine failure by staff to identify and record
Exam players restart the machine itself, the availability of extra time? no
Scratch paper runs out, how to deal with: a show of hands to help the invigilator
Finished water to drink, how to deal with: a show of hands to the staff and then to a bottle
Examination was too easy, to leave early? Yes
After leaving the examination room and I found that there is a problem did not change, can go back and change it? Can not
Test suddenly the machine did not respond, and how to deal with? Hands turned to the invigilator
Examination found in the list of login name and password lost, how to deal with? Ask staff to deal with, and assume total score points
penalty
Re-evaluation of the time to forget the login name and password, and how to deal with? Ask staff to deal with, and assume total score of penalty points
Before the invigilator announced NOI machine test began, whether to allow players to log on and read the papers? no
In the NOI series of examinations, if properly because the file name does not lead to 0 sentenced proposed re-evaluation request, it will be accepted? Do not
be
In the NOI series of exams, if the directory name because the file does not lead to incorrect sentenced to 0, proposed re-evaluation request, it will be accepted?
will not
In the NOI series of exams, if because the file path does not lead to incorrect sentenced to 0, proposed re-evaluation requests will be accepted
it? will not
Lazarus is an IDE to support multi-window editing it? Yes
Anjuta is an IDE supports multi-window editing it? Yes
Players can not use the IDE environment editor source code? can
Players fill in the blank answer, the answer can be included in the quotes submitted by you? Can not
Examination on the NOI, allowing players to use programming languages including: C, C ++, Pascal
Types of questions NOI competition are: non-interactive program title, interactive program questions, answer questions submitted
Players submit a valid file types are in competition: answer file, source.
Operating procedures shall be submitted by the player include: attempting to access the network, using a fork or other threads / processes generating
function, or open other files created outside of the input / output file specified title, running other programs.
Whether the modified program or answer based on complaints will be entertained: No
Whether or not re-measured results support the complaint will be accepted: No
Whether over time the complaint appeal will be accepted: No
Which you may encounter the following situations apply to staff overtime compensation: computer hardware failure by staff to identify and
record; operating system crash, confirmed by the staff and records.
If you encounter the examination of computer hardware failure or operating system crash, how to deal with? Hands for help to staff
Players can enter the examination room to carry items are: pens, watches.
Players enter the examination room can not carry items are: paper, U disk, mobile phones, notebooks.
Contest organizers items for the players to provide competition venues are: scratch paper, drinking water, food.
Players in the process of re-evaluation, if the issues lost password for the password to the bar and staff will be deducted 5 points.
Players running on a test point in time more than just time 0.005 seconds, count as overtime? Count
NOI game, players what behavior is prohibited? In the invigilator announced NOI look at the questions before beginning the test machine;
announced the landing system before the start of the test machine NOI invigilators; NOI announced before the start of the test machine touch keys invigilators
, mouse and other peripherals; use the network.
When evaluating candidates answer, if you run a memory test point exceed the memory limits, the program does not run correctly, the test
pilot 0 points.
The examination process to discuss with each other if the candidates will be disqualified candidates.

Computer knowledge and NOI, IOI history
A complete computer system should include hardware and software systems.
Currently microcomputer logic components used in large-scale and ultra large scale integrated circuits.
The difference between the software and the software program that is the general term for all documents and procedures development, use and maintenance required, and the program is
part of the software.
IT represents information technology.
Referred to as the computer's central processor CPU.
Effect within a computer memory is used to store programs and data that the CPU is currently in use.
For the overall management of computer hardware and software resources software called an operating system.
LAN refers to a local area network.
In the microcomputer, bit the Chinese meaning of binary bits.
Smallest unit of information a computer can recognize a bit.
ASCII is the meaning of the American Standard Code for Information Interchange.
In computer terms often represented by a random access memory RAM.
RAM memory after a power failure, wherein the data is changed.
ROM memory after a power failure, where the data does not change.
Modern computer stored program principle applied is von Neumann out.
A computer all information is represented in binary digital form.
Computer-recognition and execution of language is machine language.
Linux is an open source operating system, meaning that the source code is freely available.
NOI in Chinese means National Olympiad in Informatics.
32bit word length of the computer, as it represents a whole length of the transfer data may be 4 bytes.
A byte consisting of eight adjacent binary bits.
Binary number "10" into a decimal number is 2.
The number of binary and hexadecimal number (AB) equivalent is 10101011
Linux, view the current path using the command pwd.
Establish command directory is used under Linux mkdir.
NOI game provided Pascal IDE environment GUIDE, Lazarus.
NOI game provided C ++ IDE environment in addition GUIDE, there Anjuta.
NOI game in addition to the programming tools GUIDE, Lazarus, Anjuta IDE environment, etc., may be used in
the programming tools Vi, Gedit.
NOI game playing time per game machine exam is 5 hours.
First held in 1984 NOI.
12th IOI was held in Beijing in 2000.

// The above is Zhang finishing NOI2017 written exam, like the ccf

Competition environment and competition rules

Computer knowledge and NOI, IOI history

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