VNOI Marathon 08 (SPOJ)

VNOI Marathon '08

Information for non-Vietnamese contestants

Introduction
We welcome all of you to the contest "VNOI Marathon '08"!
This is a programming league. Each week, there is a round running from Saturday to Sunday. Problem descriptions are available in both Vietnamese and English.
Problems are divided into division A and B. Division B's problems are easier. You may solve the problems of both divisions.
Good luck and have fun!

Scoring
Problems scoring is in OI-style (i.e. programs can still earn points if partially correct).

When a round is running, each submission is only judged with the example cases. If passed, that submission receives the status 'Đạt yêu cầu' (Accepted) and is noted with 'Đ' (Correct) in the rank list. If failed, it is noted with 'S' (Incorrect). The submission will still be graded if it fails the example cases.
All submissions will be regraded with the real test cases after the round ends. The result will available from 2 to 24 hours. At that time, you may check the rank list to see your score.
For each problem, only the last submission will be considered.
The maximum score for each problem can varies (from 50, 100, 150,...) depending on whether that problem is hard or not.

Schedule
Notes:

All round will start at 07h00 and end at 19h00 the day after (i.e. it will run in 36 hours).
Time-zone is GMT +7.
We will announce any changes to this schedule.

Round	Start date (in 2008)
1	June 14th - June 15th
2	June 21st - June 22nd
3	June 28th - June 29th
4	July 5th - July 6th
5	July 12th - July 13th
6	July 19th - July 20th
-	July 26th - July 27th
7	August 2nd - August 3rd
8	August 9th - August 10th
9	August 16th - August 17th
10	August 23rd - August 24th
11	August 30th - August 31st
12	September 6th - September 7th

Instructions
Here are some English words corresponding to Vietnamese words you may find in the site:
Chấm bài: Status
Gửi bài: Submit
Đề bài: Problems
Xếp hạng: Ranks
Tin tức: News
Giới thiệu: Information
Quy định: Rules
Diễn đàn: Forum
Liên kết: Links
Status Code:
Đạt yêu cầu: Accepted
Kết quả sai: Wrong Answer
Chạy quá thời gian: Time Limit Exceeded
Others:
Bảng A: Division A
Bảng B: Division B
Luyện tập: Practice
Thống kê: Statistics
After opening a problem, you can click into the word "English" in the top to view the English version of the problem.

Contact us
If there are any questions regarding the rules or results of the contest, please contact us via the Vietnamese Olympiad forum or via the email address vnoicontest@gmail.com.
After each round finishes, you can also download the problems test cases at the Vietnamese Olympiad forum.