2019 December Contest -- Final Results
The 2019 December contest featured algorithmic programming problems covering a wide range of techniques and levels of difficulty.
A total of 7698 distinct users logged into the contest during its 4-day span. A total of 6545 participants (a substantial jump from last year!) submitted at least one solution, hailing from 76 different countries:
3508 USA 1615 CHN 205 KOR 142 CAN 84 ROU 83 MYS 73 BLR
68 RUS 67 VNM 62 IND 58 GEO 38 SGP 31 FRA 29 IRN
26 POL 26 KAZ 25 MEX 24 UKR 22 ARM 21 AUS 19 SLV
19 GBR 19 CUB 18 HRV 18 DEU 16 TWN 16 MNG 15 TUR
15 BGD 14 SRB 13 BRA 12 EGY 10 JPN 9 SAU 9 HKG
8 IDN 8 COL 7 TUN 7 LTU 6 THA 6 SYR 6 MAR
6 EST 5 NLD 4 ZAF 4 TJK 4 ISR 4 BGR 3 NGA
3 ITA 3 BEL 2 TKM 2 PRT 2 HUN 2 GRC 2 CYP
2 AZE 2 ARG 1 ZWE 1 WSM 1 UZB 1 PHL 1 PER
1 NZL 1 NOR 1 NER 1 MDA 1 KGZ 1 HTI 1 GIN
1 FIN 1 ECU 1 DOM 1 CMR 1 BIH 1 BHS
In total, there were 20319 graded submissions, broken down by language as follows:
7138 C++11
5261 Java
4705 C++
2805 Python 3.4.0
299 Python 2.7.6
103 C
8 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 2019 December Contest, Platinum
The platinum division had 493 total participants, of whom 317 were pre-college students. Results for top scorers are here. Congratulations to all of these high-scoring participants for their excellent results!
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USACO 2019 December Contest, Gold
The gold division had 900 total participants, of whom 694 were pre-college students. All competitors who scored 800 or higher on this contest are automatically promoted to the platinum division. Detailed results for all those promoted are here.
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USACO 2019 December Contest, Silver
The silver division had 2299 total participants, of whom 1715 were pre-college students. All competitors who scored 650 or higher on this contest are automatically promoted to the gold division. Detailed results for all those promoted are here.
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USACO 2019 December Contest, Bronze
The bronze division had 5831 total participants, of whom 4442 were pre-college students. All competitors who scored 800 or higher on this contest are automatically promoted to the silver division. Detailed results for all those promoted are here.
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Final Remarks
What an awesome start to the season! Our participation numbers jumped by a substantial amount from last year, which is great to see. As is typical for the first contest of the season, we saw a large number of promotions across all divisions.
For those not yet promoted, remember that the more practice you get, the better your algorithmic coding skills will become -- please keep at it! 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. To help you fix any bugs in your code, you can now re-submit your solutions and get feedback from the judging server using "analysis mode".
Many people contribute towards the quality and success of USACO contests. Those who helped with this contest include Benjamin Qi, Spencer Compton, Mark Gordon, Nick Wu, Eric Wei, Dhruv Rohatgi, Michael Cao, and Yinzhan Xu. Thanks also to our translators and to Clemson CCIT for providing our contest infrastructure. Finally, we are grateful to the USACO sponsors for their generous support: TwoSigma, D.E. Shaw, and Ansatz Trading.
We look forward to seeing everyone again for the 2020 January contest.
Happy coding!
- Brian Dean ([email protected])
Professor of Computer Science, Clemson University
Director, USACO