Category: OI


The story started in May. I participated in TFT, hoping to get to IOI. However, I got the first in the TFT, by the selection algorithm, I would go to IOI and NOI. (I expected to get the second, just after Alan Chan, which was an IOI-only place)

In July, I finally went to IOI. As this was my second IOI, I already had experience and got a bronze medal. This was my expected result. I went back satisfied with the result.

At that time, the other IOI team mates had already finished all the OI stuff, returned to holiday. I had to wait one week and go to the world’s most difficult OI competition — NOI. NOI was hell. The place was hell, the food was like in hell. I didn’t put my expectation high as NOI is more difficult than IOI. I expected only a bronze before the competition. However, I got exceptionally high score in the 1st competition (225 in 300), which pushed my expectation up to silver (some team mate even said I might get the first gold for Hong Kong!). In the 2nd competition, I got 150 marks — exactly I expected. The final result was a silver medal — just 4 marks below the gold. My place was the 41st, inside the 60 places for the training team.

Now I’ve raised my aim. I aim for the gold medal next year, either in IOI or NOI. I also hope that someone from Hong Kong (most probably me or Alan Chan, as we are still within the age limit by 30 June) can get the first gold medal in NOI.


HKOI 2011 result

Result of HKOI 2011 has been released today at this page. As usual, my name is on the top of the list. But sadly I cannot find Simon on the list, that means, our school still haven’t broken the ice of having only me getting a medal. I guess that the names are sorted by descending order of the score, therefore, I think that I’m the one who gets 440 marks. Actually, after the contest, I found that I overlooked an overflow bug of program 3 and thus lost 10 marks in that program.

HKOI 2011 final event

This year, my school has 2 contestant got into the final event, 1 in the senior group and 1 in the junior group. I’m the contestant of the senior group. This year’s paper is much easier than before, but due to an integer overflow bug in program 3, I may not get full marks again.

In the afternoon, I went to Golden Beach. I saw that some workers were setting up the venue for tomorrow’s swimming race. I didn’t join that race this year because swimming is not my strength.

HKOI 2011 heat event

This is the first year that I participate in senior group. In this year, there are 4 contestants from our school, including me, Josh, Simon and 建廷, joining the competition. The event was held in Tai Po, the same as the last 4 years. The paper was not too difficult. I hope that all 4 from our school, and Jason, who now studying in another school, can enter the final event.