By the end of the second week, there are 569 registered participants from 67 countries (the list of countries is given below). In total, 182 solutions have been submitted, out of which 53 were correct.
First week:
| First Name | Surname | School/University | Country | date | time |
| Dobrica | Jovanović | Mathematical Grammar School | Serbia | 17/11/19 | 18:05 |
| Duc Huy | Tran | The Hong Kong University of Science and Technology | Viet Nam | 18/11/19 | 05:43 |
| Tung | Linh | Currently in gap yer | Vietnam | 18/11/19 | 06:55 |
| Oliver | Lindström | KTH | Sweden | 18/11/19 | 16:05 |
| Guilhermo | Costa | Colégio Objetivo Integrado | Brazil | 18/11/19 | 18:14 |
| Hiển | Nguyễn | HUS High School for Gifted Students | Vietnam | 21/11/19 | 06:56 |
| Zhu | Youheng | Shenzhen Middle School | China | 23/11/19 | 14:38 |
| Hayk | Soghomonyan | ETH Zurich | Switzerland | 24/11/19 | 03:40 |
Second week:
| Roberto | Marín Delgado | Universidad de Costa Rica | Costa Rica | 24/11/19 | 14:51 |
| Bayram Alp | Şahin | Ankara Sience HS | Turkey | 24/11/19 | 16:47 |
| Oliwier | Urbański | VII LO im. Dąbrówki w Poznaniu | Poland | 24/11/19 | 18:35 |
| Yuechen | Zhu | Henan Experimental High School | China | 25/11/19 | 07:13 |
| Pan | Feiyue | The High School of Anhui Normal University | China | 25/11/19 | 11:15 |
| Zhaoyan | Pang | Harbin No.3 Middleschool | China | 25/11/19 | 15:37 |
| Alexandre | Bastos | Objetivo Integrado | Brazil | 25/11/19 | 19:51 |
| Trang Đào | Công Minh | HUS High School for Gifted Student | Viet Nam | 26/11/19 | 12:11 |
| Quan | Nguyen | Hanoi-Amsterdam High School for the Gifted | Vietnam | 26/11/19 | 15:53 |
| Tan | Nguyen | Vietnam National University | Vietnam | 27/11/19 | 14:27 |
| Tejas | Bansod | Resonance Kota | India | 28/11/19 | 14:53 |
| Johanes | Suhardjo | Hong Kong University of Science and Technology | Indonesia | 29/11/19 | 07:40 |
| Hanyi | Li | Chengdu Foreign Languages School | China | 29/11/19 | 11:55 |
| Ma | Yizhou | Hangzhou No.2 High School of Zhejiang Province | China | 29/11/19 | 13:53 |
| Antonia | Ghita | International Computer High School of Bucharest | Romania | 29/11/19 | 16:56 |
| Jerry | Han | Raffles Institution | Singapore | 30/11/19 | 04:32 |
| Guanyu | Zhu | Shenzhen Middle School | China | 30/11/19 | 10:43 |
| Erik | Sünderhauf | Technical University Munich | Germany | 30/11/19 | 10:50 |
| prakhar | singh | IIT Kanpur | India | 30/11/19 | 14:39 |
| Batuhan | Keskin | Bogazici University | Turkey | 30/11/19 | 18:04 |
| Alessandro | Menegon | Colégio Objetivo Integrado | Brazil | 30/11/19 | 23:55 |
Third week:
| Mert | Unsal | Bahcesehir High School for Science and Technology | Turkey | 01/12/19 | 14:50:00 |
| Ronald | Doboš | Gymnázium, Poštová 9, Košice | Slovakia | 01/12/19 | 15:28:00 |
| Jonathan | Gräfe | Technische Universität Dresden | Germany | 01/12/19 | 17:21:00 |
| Alper | Tezcan | Bahcesehir High School for Science and Technology | Turkey | 02/12/19 | 13:37:00 |
| Niko Nanda Putra Nila | Lay | Technical University Munich | Germany | 02/12/19 | 20:21:00 |
| Tevž | Lotrič | Gimnazija Kranj | Slovenia | 03/12/19 | 21:41:00 |
| Alexandre | Fouquet | European School Luxembourg I | Luxembourg | 04/12/19 | 18:47:00 |
| Gourish | Garg | Sri Chaitanya Chandigarh | India | 05/12/19 | 08:35:00 |
| Arin | Kedia | Bhagat Public Sr Sec School | India | 07/12/19 | 15:00:00 |
| Jiakai | Chen | Hwa Chong Institution | Singapore | 08/12/19 | 03:19:00 |
Fourth week:
| Absur Khan | Siam | Notre Dame College | Bangladesh | 08/12/19 | 08:25:00 |
| Damiano | Tietto | Università degli Studi di Padova | Italy | 08/12/19 | 17:10:00 |
| Nithesh Sanjeevi Saravanan | Saravanan | NUS High School | Singapore | 08/12/19 | 17:12:00 |
| Jakub | Lewandowski | Liceum Politechniki Łódzkiej | Poland | 08/12/19 | 21:26:00 |
| Rashedul | Islam | Notre Dame College | Bangladesh | 09/12/19 | 16:18:00 |
| István | Csépányi | Budapest University Of Technology And Economics | Hungary | 09/12/19 | 18:27:00 |
| Ivan | Kharichkin | School No 239, Saint Petersburg | Russia | 09/12/19 | 20:45:00 |
| Péter | Elek | Budapest University Of Technology And Economics | Hungary | 09/12/19 | 22:47:00 |
| Endre | Bokor | Budapesti Fazekas Mihály Gyakorló Általános Iskola és Gimnázium | Hungary | 11/12/19 | 21:34:00 |
| Hoang | Le Minh | HUS High School for Gifted Students | Vietnam | 12/12/19 | 10:30:00 |
| Hisham | Almalki | Manarat Al-Riyadh School | Saudi Arabia | 14/12/19 | 15:50:00 |
| Gabriel | Capelo | Universidade de São Paulo | Brazil | 15/12/19 | 01:14:00 |
| Xuanyu | Lin | Shenzhen Foreign Languages School | China | 15/12/19 | 06:49:00 |
| Anastasia | Stovbchataya | Lyceum BSU | Belarus | 15/12/19 | 12:55:00 |
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 .