The hint for Problem 1 will be published on 30th January 2022, 13:00 GMT .
By 23rd January 2022, 13:00 GMT, there are 1067 participants from 78 countries. 27 solutions to P1 were submitted, out of which 17 were correct.
Correct solutions by university students:
| First name | Surname | Country | School/University | P3 date time DD/MM/YY 00:00:00 |
| Alessandro | Rezzi | Italy | University of Padova | 16/01/2022 15:54:00 |
| Bayram Alp | Sahin | Turkey | Bogazici University | 16/01/2022 16:19:00 |
| Zhening Li | Eddie Chen | Canada/United States | Massachusetts Institute of Technology | 16/01/2022 17:05:00 |
| Ameya Vikrama | Singh | India | Indian Institute of Technology Bombay | 18/01/2022 17:42:00 |
| Yeswanth Narayana | Patnana | India | Indian institute of technology Madras | 20/01/2022 13:25:00 |
| Jaroslav | Herman | Czech Republic | Charles University | 21/01/2022 18:21:00 |
| Erik | Sünderhauf | Germany | Technical University of Munich | 21/01/2022 19:03:00 |
| Shofar | Sno | Suriname | Anton de Kom University of Suriname | 21/01/2022 19:03:00 |
| Yuechen | Zhu | China | Peking University | 23/01/2022 06:58:00 |
| Qian | Lin | China | University of Oxford | 23/01/2022 10:39:00 |
Correct solutions by pre-university students:
| Luca | Milanese | Italy | Liceo “Leonardo da Vinci”, Terracina | 16/01/2022 16:01:00 |
| Vlad-Ștefan | Oros | Romania | “Grigore Moisil” Theoretical High School | 16/01/2022 19:10:00 |
| Balázs Csaba | Kovács | Hungary | Hatvani Bajza József Gimnázium | 19/01/2022 18:10:00 |
| Filip | Vučić | Croatia | I. gymnasium Zagreb | 19/01/2022 20:44:00 |
| Ahmet Bahadır | Trabzon | Turkey | Kabatas Erkek High School | 21/01/2022 13:10:00 |
| Emir Akdağ | Kaan Dere | Turkey | Bahcesehir Highschool of Science and Technology | 21/01/2022 14:48:00 |
| Chengkai | Yu | China | The High School Affiliated to Renmin University of China | 23/01/2022 12:59:00 |
The list of countries:
Algeria, Argentina, Australia, Azerbaijan, Bangladesh, Belarus, Belgique, Bosnia and Herzegovina, Brazil, Brunei Darussalam, Bulgaria, Canada, China, Costa Rica, Croatia, Czech Republic, 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