Computer Science Canada

ECOO
Author:  Flikerator [ Sat Mar 18, 2006 4:59 pm ]
Post subject:  ECOO
Anyone competing in the ECOO contest on tuesday? Im competing in the DSBN board. What board are you from, if your competing?

http://www.ecoo.org/ecoocs/Contests.html
Author:  MysticVegeta [ Sun Mar 19, 2006 2:08 pm ]
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This should be in the contests thread, anyways, I would have competed for it if I didnt move to this stupid place! -_-
Author:  DIIST [ Sun Mar 19, 2006 8:29 pm ]
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I'm competing in the YRSB Board, but I'm stuck with a lame team! Laughing
Author:  Flikerator [ Sun Mar 19, 2006 9:10 pm ]
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thuvs wrote:
I'm competing in the YRSB Board, but I'm stuck with a lame team! Laughing


I am my team XD My teamates job is to fetch me drinks Very Happy
Author:  MysticVegeta [ Sun Mar 19, 2006 9:47 pm ]
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Thats what my teammates did in DWITE in grade 9 last year.
Author:  DIIST [ Mon Mar 20, 2006 6:47 pm ]
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My team mates amuse me with they're stupidity, Which boosts up my selfconfidence. Cool None of them know anything about filehandling Laughing
Author:  MysticVegeta [ Mon Mar 20, 2006 6:52 pm ]
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None in my team knew how to do File IO Confused which made me loop smarter Razz
Author:  Albrecd [ Tue Mar 21, 2006 12:33 pm ]
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It made you loop smarter? As in you were able to more efficiently determine which code should be repeated?
Author:  cool dude [ Tue Mar 21, 2006 5:10 pm ]
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i competed it in today. unfortunately i didn't score top 5 so we don't move on to regionals Sad it was fun and challenging though. how well did u guys do?
Author:  MysticVegeta [ Tue Mar 21, 2006 6:38 pm ]
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Albrecd wrote:
It made you loop smarter? As in you were able to more efficiently determine which code should be repeated?

look*
Author:  Flikerator [ Tue Mar 21, 2006 8:42 pm ]
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I beat all the all the grade 11s and 10s (im grade 11) and got 4th. We had 3rd up untill the end, and were almost done that stupid rabit one (It should have taken like 5 minutes, but it was worded wierd...) someone submited right at the end and beat us by TWO points! >< So we lost third =P

Im the only one on me team who knows anything. My team, not one of then knows how to use a regular array...They bugged the hell out of me. "Whats this, why are you doing that. Loops dont work like that". One guy kept stabbing me with a pen, and I threw him out of the room. Next year im going by myself.

The guy who one at our board, yes the SINGLE guy, no team, got all four questions. He scored like 450. Almost as good as Rob Flack (sp?). Rob Flack is a legend in our district, im not sure how well known he is though =D We called this guy mini-flack
Author:  zylum [ Wed Mar 22, 2006 10:11 am ]
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anybody mind posting the problems?
Author:  andytyk [ Wed Mar 22, 2006 1:56 pm ]
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I'm not sure if each school board received the same questions (which is most likely the case), but there are still school boards that haven't written the contest yet. So please refrain from discussing or posting the questions until April.
Author:  MysticVegeta [ Wed Mar 22, 2006 2:33 pm ]
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I think its not same for every board if it is on different days.
@Flikerator: The legend I have seen is Simon Parent. Holy smokes that guy is a crazy programmer.
Author:  Flikerator [ Wed Mar 22, 2006 5:30 pm ]
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http://www.ecoo.org/ecoocs/PastContests.html

The've been the same so far Razz

I thought all the boards did them at the same time ^^;

EDIT:Never heard of him ^^;
Author:  MysticVegeta [ Wed Mar 22, 2006 6:34 pm ]
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Confused Why dont they make it the same day, it could resort to cheating...
Author:  Flikerator [ Wed Mar 22, 2006 8:35 pm ]
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MysticVegeta wrote:
Confused Why dont they make it the same day, it could resort to cheating...


Major cheating...Although they do regionals and finals on the same day I think...Finals have to be on the same do at least ^^;
Author:  Hikaru79 [ Wed Mar 22, 2006 11:01 pm ]
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There's a two-week window for each board; they can decide to hold it on any day between then. The window this year is until April.

I guess the rationale for this is that cheating is kind of pointless; even if a district decides to cheat, all that means is that their representatives will be poorly chosen. Since this is just a qualifying round, it gives you no benefit to qualify the wrong people, you're just hurting your own chances.
Author:  JackTruong [ Sat Mar 25, 2006 7:13 pm ]
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We did ours today, #11 in Toronto District, #6 in West TDSB.

Score

Looks like we're going to regionals this year.
Author:  cool dude [ Sun Mar 26, 2006 4:27 pm ]
Post subject: 
JackTruong wrote:
We did ours today, #11 in Toronto District, #6 in West TDSB.

Score

Looks like we're going to regionals this year.


don't u have to come in the top 5 to go to regionals? Confused

wow u guys must have had easier problems because the highest scoring team had a score of about 450 in our district.
Author:  MysticVegeta [ Sun Mar 26, 2006 4:34 pm ]
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I think thats for the final one.
But arent the questions smae for the contest since that being the reason why posting the questions was not permitted?
Author:  cool dude [ Sun Mar 26, 2006 5:14 pm ]
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well lets see...

my first question was about rabits dying and the fibonachi sequence. if u didn't write your contest on tuesday but u have the same problem please reply for us to know if all the problems are the same
Author:  JackTruong [ Mon Mar 27, 2006 4:36 pm ]
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cool dude wrote:
my first question was about rabits dying and the fibonachi sequence.
Yep, we had the same problems in our district contest.

For TDSB, it was top 6 from west and east, plus 2 all female teams.
Author:  Flikerator [ Tue Mar 28, 2006 12:30 pm ]
Post subject: 
We got fourth and aren't going to regionals. We were so close to getting second (yah second, not third) =P

Im reserving regionals, and then winning finals for next year Wink
Author:  Flikerator [ Wed Mar 29, 2006 12:39 am ]
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Whoever added me to their MSN and asked me to cheat, you don't deserve to study computer science. Programming is getting problems and solving them....Truely sad.
Author:  Chinchilla [ Thu Mar 30, 2006 3:19 pm ]
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I have no shame. Anyways, I just came back from the competition, I got 3 of the questions and I'm going onto regionals, so yea. If I offended you by asking you to help me cheat than sorry, hope we can start fresh.
Author:  Drakain Zeil [ Sat Apr 01, 2006 6:31 am ]
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Yeah, my team is going to the region, over at the university of Western, (london, ont).

I've decided to take on the role of drill sargent, and am trying to whip my team into some sort of shape between now and the 29th (sigh, I'm doing a 32 hour work week, and have several tests...).

Anyway, hope to see some of you guys at western (if you're going to that one, anyway).
Author:  1of42 [ Sat Apr 01, 2006 1:17 pm ]
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My team's on to regionals, at York.
Author:  Chinchilla [ Sat Apr 01, 2006 3:49 pm ]
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1of42: Guess I'll be seeing you on april 29th. Wink
Author:  Jake [ Tue Apr 11, 2006 5:56 pm ]
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Anyone else going to East Regionals?

Our team was two grade 9's and two 11's (I'm an 11) we got first place with I think 250 points. Moira SS is our team name. Lot's of technical difficulties (power outage screwed the laptop up)
Author:  zylum [ Tue Apr 11, 2006 7:00 pm ]
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zylum wrote:
anybody mind posting the problems?


k its april now... can you guys post the problem set? ill try giving an analysis of each problem.
Author:  MysticVegeta [ Tue Apr 11, 2006 11:25 pm ]
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zylum wrote:
anybody mind posting the problems?

pleaasssseee Crying or Very sad
Author:  Drakain Zeil [ Sun Apr 23, 2006 9:29 am ]
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Contest is getting closer, best of luck to everyone. Anyone here going to London on the 29th?
Author:  Chinchilla [ Sat Apr 29, 2006 2:59 pm ]
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Just got back from regionals, and I'm going onto finals Smile

I got perfect scores on the first and second problem and I did them within an hour. I started on the 4th problem, did it, and got correct output (but it took awhile for it to generate the output) so I spent time trying to make it more efficient, ended up doing that, and called them over, got only 2 of the test cases right because they said that each letter had to be a unique digit even though it didn't state it in the fucking problem, so we spent the next half hour arguing with them, don't know why I didn't just fix it but yea =\ (we still only got 40 points). The third problem was a graphics one so no one in my team could do it.

The blonde coordinator is a bitch.

We came in 7th place (philip pocock catholic secondary school)
Author:  JackTruong [ Sat Apr 29, 2006 3:38 pm ]
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Problem 3 was a unique problem, I never worried about a graphics class in a contest until today. Our team managed to solve 1 and 2 within the last hour, and solved #4 after the contest finished.

We ended up 16th, whereas the other team from our school made it 10th.
Author:  Chinchilla [ Sat Apr 29, 2006 3:52 pm ]
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were you in the same room as me? We had that blonde coordinator, and there was that hot girl in a team sitting at the desk in front of where the pizza was served. If so you probably seen that spikey haired guy argue with the judges for awhile, than he called me up to argue with him.
Author:  JackTruong [ Sat Apr 29, 2006 4:38 pm ]
Post subject: 
Yep, I was at the York Regionals. We were the team in the furthest left (score board left) in the middle. I wasn't paying much attention to the surroundings, so I probably missed it.
Author:  MysticVegeta [ Sat Apr 29, 2006 7:30 pm ]
Post subject: 
Now can someone post the questions for the previous contest??
Author:  Chinchilla [ Sat Apr 29, 2006 8:30 pm ]
Post subject: 
Yea ok, I don't have a scanner so I'm just typing this up. These are the problems for the boardwide ECOO competition 2006.

Problem 1: Fibonacci's Rabbits

The well-known Fibonacci sequence 1,1,2,3,5,8,13,21,.... is based on the proposition that, given that any pair of rabbits will produce a new pair of rabbits every month for ever, except in the first month after their birth. The sequence gives the number of pairs of rabbits that there would be in any given month.

That is:
- starting with 1 newborn pair in month one,
- which would still be 1 pair of rabbits in month two,
- which would be 2 pairs in month 3 (since this pair would produce a new pair in month 3
- there would be 3 pairs in month 4 (since the first pair would produce a new pair)
- there would be 5 pairs in month 5 (since the first two pairs would produce a new pair... etc.)

But supposed, that, instread of living forever, and reproducing endlessly, each pair of rabbits would only live for 5 months, and therefore only produce 3 new pairs before they died. The sequence then would run: 1,1,2,3,5,6,10,14,.....

And if each pair would live for only 3 months, the sequence would become: 1,1,2,1,2,1,2,...

DATA11.txt (DATA12 for the second try) contains 5 lines of two positive integers, A and B. The integer A represents the number of months each pair of rabbits lives, 2 < A < 101. The integer B, 2 < B < 101, represents the number of months that have passed when the count of the number pairs of rabbits occurs. A and B will have values such that the number of pairs of rabbits will never exceed 999 999 999.

Output should be on a cleared screen or window, and will state the number of rabbit pairs in each of the 5 cases. Output should appear as in the example below.

Sample Input:

5 10
30 30
12 40
4 40
6 49

Sample Output:

in problem #1 there are 30 rabbit pair(s)
in problem #2 there are 832040 rabbit pair(s)
in problem #3 there are 95539192 rabbit pair(s)
in problem #4 there are 65657 rabbit pair(s)
in problem #5 there are 74044619 rabbit pair(s)

That took longer than expected D: I'll post the next one after I finish watching without a trace.

Yay, back, time for edit.

Problem 2: Flip Twice Cypher

Consider the 27 characters composed of a blank and the 26 capital letters of the alphabet:
" ABCDEFGHIJKLMNOPQRSTUVWXYZ"
They can be written, according to their position in the string, as a number between 0 and 26 inclusive. In base 3 these numbers would be written with exactly 3 digits, from 000 for blank to 222 for the last letter, "Z"

The "Flip Twice Cypher" divides a message into pairs of characters as shown in the diagram below. In an example such as "HELLO WORLD", there is an odd number of characters, so a dummy character (the X) is added to make a final pair. The most significant digit from the base 3 number of each letter is switched between each pair. The characters then form new pairs, by turning to the other neighbour as shown and switching the least significant digits. Since the first and last characters have no partner, they perform the switch with each other. The result is a new set of base 3 numbers, which again can be turned into letters. The coded message now reads: "FCNLFKLXIVUH"

//crude copy of image:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

//the sqwiggles between what look like numbers represent the switches, note the switch from the first char to the last char for the least significant digit. The lyric isn't in the picture.

DATA21.txt (DATA22 for the second try) contains 5 lines of text, each representing one encoded message. It is your job to decode this message and display it on the screen as in the sample below. No line will contain more than 250 characters. Output may wrap if it does not fit on one line. Note that if a line contains an odd number of characters, you must assume the existence of a last (phantom) blank character.
//oooooohohoohoo phantom character :O

Sample Input: (only 3 of 5 lines are shown)
FCNLFKLXIVUH
LQCRRISBHCT KND OF SICCKIX CONDBIXRBHCB ALJFFB ZEAFISSZZ
BZEAIXJTCOJFFBRUHK XZM TDLABDLS SOIA TFCBW

Sample Output: (only 3 of 5 lines are shown)
HELLO WORLDX
NOW IS THE TIME FOR ALL TO COME TO THE AID OF THE PARTYX
THE SPRING OF TWO THOUSAND AND SIX IS HERE

yay, time for another delay before next edit. Head is sinking Smile
Author:  alpe [ Sat May 13, 2006 8:53 pm ]
Post subject: 
So the Finals were today!

1. Vaughan Road Academy
2. AY Jackson SS
3. Vincent Massey SS
4. Resurrection CSS (my school Smile )

And I really wanted a shiney medal.
Author:  Andy [ Tue May 16, 2006 4:34 pm ]
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massey got 3rd? good job guys. man i wish we competed in this contest a couple of years ago..
Author:  bugzpodder [ Wed May 17, 2006 9:00 am ]
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oh be quiet Andy. I wanted to form a team but nobody was interested, so I didn't get to go... Besides I'm not keen on one-man teams......
Author:  McKenzie [ Fri May 19, 2006 8:21 pm ]
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Sorry guys, it took me a bit to see the value in these contests. As far as the one-man-show goes bugz, thats the last thing Andy and I wanted, but the problem was the strong programmers didn't want to be on Andy's team because they wanted to earn their own way. We ended up with with Andy and some good programmers, but guys that couldn't help Andy much.
Oh congrats alpe, you guys jumped from like 7th at regional to 4th at provincial, that's a good showing.
Author:  bugzpodder [ Sat May 20, 2006 10:55 am ]
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Hi Mr. Mckenzie. Well, I was just commenting on Andy Sun's comments on how he wanted to go. what i meant was when I wanted to participate, I could not get any other member to go with me, much less good programmers...

Ditto to congrats on Massey team's achievements. Very impressive indeed. I probably could not have done better myself.

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