The first hint for Problem 4 will be published on 12th March 2023, 13:00 GMT.
By 5th March 2023, 13:00 GMT, there are 1246 participants from 91 countries. 32 solutions to P4 were submitted, out of which 14 were correct. Next update of the intermediate results: 19th March 2023, 13:00 GMT.
Correct solutions by university students:
| Lukas | Schicht | Germany | University of Rostock | 26/2/23 21:49 |
| Tejas | Acharya | India | University of Oxford | 2/3/23 12:07 |
| Gil | Ronen | Israel | Hebrew University of Jerusalem | 4/3/23 21:20 |
| Anindya | Guria | India | Indian Institute of Science | 6/3/23 07:24 |
| Luka | Passek-Kumerički | Croatia | University of Zagreb | 6/3/23 23:29 |
| Alessio | Biccari | Italy | La Sapienza | 8/3/23 21:33 |
Correct solutions by pre-university students:
| Vlad-Ștefan | Oros | Romania | “Grigore Moisil” Theoretical High School | 26/2/23 14:26 |
| Alptürk | Eski | Turkey | Erbakır Science High School | 26/2/23 20:23 |
| Emir Akdag | Kaan Dere | Turkey | Bahcesehir High School for Science and Technology | 27/2/23 15:02 |
| Eppu | Leinonen | Finland | Munkkiniemen yhteiskoulu | 2/3/23 15:48 |
| Tomas | Babelis | Lithuania | Vilniaus jėzuitų gimnazija | 3/3/23 21:20 |
| Arda | Ünver | Turkey | Kocaeli Bahcesehir High School of Science and Technology | 5/3/23 00:57 |
| Ahmet Bahadır | Trabzon | Turkey | Kabataş Erkek High School | 5/3/23 14:59 |
| Baiyu | Zhu | United States | California High School | 6/3/23 04:37 |
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 Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Rwanda, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vietnam