February 2017 Contest -- Final Results

This was our third contest of the 2016-2017 season. A total of 2772 distinct users logged into the contest during its 4-day span. Of those, 2368 participants submitted at least one solution, hailing from 70 different countries:

 1208 USA  202 CHN  167 VNM   61 KAZ   57 ROU   51 GEO   47 CAN
   43 RUS   35 IRN   28 KOR   26 IND   26 BLR   21 UKR   20 BGR
   19 BRA   18 MEX   18 FRA   17 IDN   16 SGP   15 DEU   13 SYR
   13 CUB   13 BGD   12 TWN   12 THA   12 EST   11 KGZ   11 GRC
   11 ARM   10 TUR   10 COL   10 AUS    9 JPN    8 HKG    7 ZAF
    7 NLD    7 HUN    7 HRV    7 FIN    6 TKM    6 GBR    5 POL
    5 MDA    4 SVK    4 SRB    4 ITA    4 EGY    4 AZE    3 TUN
    3 TJK    3 MNG    3 ISR    3 ISL    3 BIH    3 AUT    2 SVN
    2 PRT    2 MYS    2 MKD    2 LTU    1 NZL    1 MAR    1 LUX
    1 ESP    1 CZE    1 CMR    1 BOL    1 BEL    1 ATG    1 ARG

The average participant who submitted code submitted solutions for 2.1 problems. In total, there were 5517 graded submissions, broken down by language as follows:

 2049 C++11
 1477 Java
 1055 C++
  123 Python 3.4.0
   93 Python 2.7.6
   52 C
   47 Pascal

Below are the detailed results for each of the platinum, gold, silver, and bronze contests. You will also find solutions and test data for each problem, and by clicking on any problem you can practice re-submitting solutions in "analysis mode". If you are logged in, you will also see your own specific results below alongside the contest(s) you took.

USACO 2017 February Contest, Platinum

The platinum division had 604 total participants, of whom 455 were pre-college students. Like the January contest, we saw a reasonable score distribution overall, with a large number of perfect scores at the top -- detailed results are here.

USACO 2017 February Contest, Gold

The Gold division had 726 total participants, of whom 600 were pre-college students.

All competitors who scored 700 or higher on this contest are automatically promoted to the platinum division. Detailed results for those promoted are here.

USACO 2017 February Contest, Silver

The Silver division had 1038 total participants, of whom 829 were pre-college students.

All competitors who scored 700 or higher on this contest are automatically promoted to the gold division. Detailed results for those promoted are here.

USACO 2017 February Contest, Bronze

The Bronze division had 943 total participants, of whom 688 were pre-college students.

All competitors who scored 700 or higher on this contest are automatically promoted to the silver division -- to all who were promoted, congratulations! Detailed results for those promoted are here.

Final Remarks

Plenty of cows crossing the road on this contest, and plenty of participants being promoted to higher divisions! Overall, our third contest of the season ran quite smoothly, with no major issues. Score distributions were all quite reasonable.

For those still waiting to achieve promotion, remember that USACO contests are designed to challenge even the very best students, and it can take a good deal of hard work to excel at them. Remember that the more practice you get, the better your algorithmic coding skills will become! To help you fix any bugs in your code, you are encouraged to consult the official solutions above and to make use of "analysis mode" to re-submit improved versions of your solutions.

A large number of people contribute towards the quality and success of USACO contests. Those who helped with this contest include Mark Gordon, Richard Peng, Travis Hance, Mark Chen, Nick (Huaiyu) Wu, Lewin Gan, and Nathan Pinsker. Thanks also to Amy Quispe for helping to maintain our social media presence (Facebook: https://www.facebook.com/UsacoContests, Twitter: (https://twitter.com/UsacoContests), our translators for allowing us to offer this contest in five additional languages, to Clemson CCIT for providing our main contest server, and to our sponsors for their generous support: Usenix, D.E. Shaw, Jump Trading, and Ansatz Capital.

Only one contest remains in our current season: the US Open, our national championship. See you all again soon!

Happy coding!

- Brian Dean ([email protected])
Director, USA Computing Olympiad
Associate Professor of Computer Science, Clemson University

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