By the end of the sixth week, there are 579 registered participants from 67 countries (the list of countries is given below). For the Problem 2, during the first week, 19 solutions were submitted, out of which 5 were correct. During the second week, 11 more solutions were submitted, out of which 2 were correct.
Week 1.
| First Name | Surname | School/University | Country | date | time |
| Tevž | Lotrič | Gimnazija Kranj | Slovenia | 15/12/19 | 15:03 |
| Oliwier | Urbański | VII LO im. Dąbrówki w Poznaniu | Poland | 17/12/19 | 15:23 |
| Duc Huy | Tran | The Hong Kong University of Science and Technology | Viet Nam | 18/12/19 | 16:15 |
| Tung | Linh | Currently in gap yer | Viet Nam | 19/12/19 | 19:27 |
| Antonia | Ghita | International Computer High School of Bucharest | Romania | 20/12/19 | 21:38 |
Week 2.
| First Name | Surname | School/University | Country | date | time |
| Roberto | Marín Delgado | Universidad de Costa Rica | Costa Rica | 22/12/19 | 19:12:00 |
| Tan | Nguyen | Vietnam National University | Vietnam | 25/12/19 | 03:59:00 |
Participating countries: Australia, Azerbaijan, Bahrain, Bangladesh, Belarus , Bosnia and Herzegovina, Brasil, Bulgaria, Cambodia, Canada, China, Costa Rica, Croatia, Ecuador, Egypt, El Salvador, Estonia, Finland, France, Georgia, Germany, Greece, Hong Kong, Hungary, India, Indonesia, Italy, Japan, Kazakhstan, Korea, Kosovo, Kyrgyzstan, Latvia, Lithuania, Luxembourg, Macedonia (North), Malaysia, Mexico, Moldova, Mongolia, Morocco, Nepal, Netherlands, Nigeria, Pakistan, Peru, Philippines , Poland, Portugal, Romania, Russia, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, Sweden, Switzerland, Syria, Tajikistan, Thailand, Turkey, Turkmenistan, United Kingdom, United States, Uzbekistan, Vietnam .