There will be no more hints published. The final deadline for this problem will be 20th February. There is a special rule for the last week: I’ll give a fast feedback if the solution was correct or not, within 24 hours from the submission. The will be no more updates until the final results for Problem 2 will be published (not later than on 24th February).
By 13th February 2022, 13:00 GMT, there are 1099 participants from 80 countries. 115 solutions to P2 were submitted, out of which 34 were correct.
Correct solutions by university students:
First name | Surname | Country | School/University | P2 date time DD/MM/YY 00:00:00 |
Zhening Li | Eddie Chen | Canada/United States | Massachusetts Institute of Technology | 20/12/21 20:52 |
Deng | Jinqiu | China | Beijing University of Aeronautics and Astronautics | 27/12/21 04:13 |
Shofar | Sno | Suriname | Anton de Kom University of Suriname | 29/12/21 06:50 |
Alessandro | Rezzi | Italy | University of Padova | 3/1/22 19:23 |
Jaroslav | Herman | Czech Republic | Charles University | 5/1/22 15:46 |
Ameya Vikrama | Singh | India | Indian Institute of Technology Bombay | 9/1/22 20:02 |
Isaac | Wu | Australia | University of Melbourne | 13/1/22 17:07 |
Kevin | You | United States | Carnegie Mellon University | 16/1/22 08:20 |
Yuechen | Zhu | China | Peking University | 16/1/22 14:07 |
Ziyue | Wang | China | Hebei University of Technology | 16/1/22 16:26 |
Qian | Lin | China | University of Oxford | 17/1/22 06:08 |
Felix | Schwarzfischer | Germany | Technical University Munich | 17/1/22 10:49 |
Ameya | Deshmukh | India | IIT Bombay | 30/1/22 10:53 |
Yun | Gu | CHINA | Tianjin University | 30/1/22 12:13 |
Erik | Sünderhauf | Germany | Technical University of Munich | 5/2/22 21:54 |
Soumyadeep | Sarma | India | Indian Institute of Science | 6/2/22 16:19 |
Simon | Selg | Estonia | Tartu Ülikool | 12/2/22 17:48 |
Yanjun | Zhou | China | University of Oxford | 12/2/22 18:47 |
Correct solutions by pre-university students:
Vlad-Ștefan | Oros | Romania | “Grigore Moisil” Theoretical High School | 21/12/21 06:22 |
Luca | Milanese | Italy | Liceo “Leonardo da Vinci”, Terracina | 4/1/22 11:58 |
Wang | Quanquan | China | Tianjin Yaohua High School | 16/1/22 15:33 |
Sebastián | Arévalo | El Salvador | Instituto Emiliani | 19/1/22 04:19 |
Yehyun | Choi | United States | Westlake High School | 22/1/22 23:36 |
Vuk | Hip | Serbia | Mathematical Grammar School | 23/1/22 12:48 |
Adam | Džavoronok | Slovakia | Gymnázium Poštová 9 | 23/1/22 14:11 |
Balázs Csaba | Kovács | Hungary | Hatvani Bajza József Gimnázium | 25/1/22 19:49 |
Absur Khan | Siam | Bangladesh | Gap Year | 30/1/22 07:53 |
Sarthak | Panda | India | FIITJEE Bhubaneswar | 31/1/22 08:04 |
Rhythm | Kedia | India | Lord Buddha Public school | 31/1/22 17:52 |
Emerson Franzua | Aldana Gavarrete | Honduras | School | 31/1/22 19:47 |
Alexandar | Roussev | Bulgaria | First Language School | 1/2/22 23:16 |
Gigi | Tsirekidze | Georgia | LEPL Kutaisi Andria Razmadze physics and mathematical public school N41 | 5/2/22 21:40 |
Miguel Isaías | Doradea Meléndez | El Salvador | Insituto Emiliani | 11/2/22 23:44 |
Azimuddin | Sheikh | India | FIITJEE | 13/2/22 10:49 |
The list of countries:
Algeria, Argentina, Australia, Azerbaijan, Bahrain, Bangladesh, Belarus, Belgique, Bosnia and Herzegovina, Brazil, Brunei Darussalam, Bulgaria, Canada, China, Costa Rica, Croatia, Czech Republic, Cuba, Egypt, El Salvador, Estonia, Ethiopia, Finland, France, Georgia, Germany, Greece, Honduras, Hong Kong, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Korea, Kosovo, Kyrgyzstan, Latvia, Lebanon, Lithuania, Luxembourg, Macao, Malaysia, Mexico, Moldova, Mongolia, Nepal, Nigeria, North Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Saudi Arabia, Serbia, Singapore, Slovakia, South Africa, Spain, Sri Lanka, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United States, Uzbekistan, Vietnam