There will be no more hints for Problem 2! The next intermediate results for Problem 2 will be published at 13:00 GMT, on 19th February 2023, and the final deadline for Problem 2 is 23:59 GMT, on 20th February 2023. Since this is essentially the last week for Problem 2, I’ll be giving a fast feedback on your submissions from now on.
By 12th February 2023, 13:00 GMT, there are 1225 participants from 91 countries. 82 solutions to P2 were submitted, out of which 19 were correct. Next update of the intermediate results: 12th February 2023, 13:00 GMT.
Correct solutions by university students:
| Gil | Ronen | Israel | Hebrew University of Jerusalem | 24/12/2022 23:23:00 |
| Anindya | Guria | India | Indian Institute of Science | 28/12/2022 13:51:00 |
| Eyal | Walach | Israel | Bar-Ilan University | 01/01/2023 00:07:00 |
| Ziyue | Wang | China | Hebei University of Technology | 01/01/2023 04:10:00 |
| Luka | Passek-Kumerički | Croatia | University of Zagreb | 07/01/2023 21:23:00 |
| Soumyadeep | Sarma | India | Indian Institute of Science | 29/01/2023 02:44:00 |
| Kerim | Cherkezov | Turkmenistan | Turkmen State University | 03/02/2023 16:09:00 |
| Lukas | Schicht | Germany | University of Rostock | 05/02/2023 22:45:00 |
| Tejas | Acharya | India | University of Oxford | 12/07/2023 12:48:00 |
Correct solutions by pre-university students:
| Vlad-Ștefan | Oros | Romania | “Grigore Moisil” Theoretical High School | 19/12/2022 19:39:00 |
| Tomas | Babelis | Lithuania | Vilniaus jėzuitų gimnazija | 01/01/2023 15:41:00 |
| Chenyun | Wang | China | Shanghai High School | 17/01/2023 10:54:00 |
| Dženan | Midžić | Bosnia and Herzegovina | JU Gimnazija “Bihać” | 22/01/2023 16:07:00 |
| Harshin | Posina | India | FIITJEE Madhapur | 26/01/2023 21:05:00 |
| Andrei-Darius | Dragomir | Romania | International Computer Highschool of Bucharest (ICHB) | 29/01/2023 00:10:00 |
| Filip | Baciak | Poland | 1 LO w Chrzanowie | 05/02/2023 00:23:00 |
| Mateusz | Kamiński | Poland | VI High School in Cracow | 07/02/2023 16:37:00 |
| Alexandar | Roussev | Bulgaria | – | 07/02/2023 18:03:00 |
| Elias Koschier | Michail Ognyanov | Austria | ERG Donaustadt | 12/02/2023 02:16:00 |
The list of countries:
Algeria, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahrain, Bangladesh, Belarus, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Cambodia, Cameroon, Canada, China, Croatia, Cuba, Czech Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, Georgia, Germany, Greece, Guatemala, Honduras, Hong Kong, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Kenya, Kosovo, Kyrgyzstan, Latvia, Lithuania, Macau, Malaysia, Mexico, Moldova, Montenegro, Nepal, Netherlands, Nigeria, North Korea, North Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Rwanda, Saudi Arabia, Rwanda, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vietnam