| Open division | Secondary School Division | |
|---|---|---|
| 1. | Team Past Glory Gennady Korotkevich (22), Borys Minaiev (22), Artem Vasilyev (24) from Russia, representing ITMO University |
Team The Tree Masketeers Xiao Mao (18), Arash Mahmoudian Bidgoli (17), Jiaqi Yang from (multiple countries) |
| 2. | Team T+B+Y Tiancheng Lou (31), Bruce Merry (35), Yuhao Du (19) from (no specific country) |
Team twx Zhongnian Tao (16), Siyang Wu (16), Haike Xu (16) from China, representing Nanjing Foreign Language School |
| 3. | Team MemSQL David Stolp, Nika Jimsheleishvili, Mikhail Kever from United States, representing MemSQL |
Team FAILED TSTST Day 2 Benjamin Qi (15), Dhruv Rohatgi, Franklyn Wang from United States, representing Princeton HS, Davidson Academy of Nevada, TJHSST |
| 4. | Team R+T+J Reid Barton, Tomek Czajka, John Dethridge from (no specific country) |
Team BasicLaw BasicLaw from China, representing 江苏省常州高级中学 |
| 5. | Team simplicissimus Lijie Chen (21), Yuzhou Gu (21), Zekun Ni (21) from China, representing Massachusetts Institute of Technology, Massachusetts Institute of Technology, Google |
Team Official Fan Club of <That z-axis guy> Donghyun Kim (18), Hyunsoo Kim (17), Jeyeon Si (17) from South Korea, representing [Gyeonggi|Daegu] Science High School |
| 6. | Team shik, step5, peter50216 from Taiwan, representing National Taiwan University |
Team TWN_Normal 鄭仲堯, 王彥仁, 吳聖福 from Taiwan |
| 7. | Team jccross111 Yinzhan Xu (20), Ce Jin (19), Haoran Xu (21) from China |
Team RUA Guanghao Ye (17), Jingqin Yang (17), Changyu Zhu (18) from China, representing Chengdu No.7 High School |
| 8. | Team Havka-papstvo Petr Mitrichev (32), Ilya Kornakov (27), Egor Kulikov (32) from (multiple countries) |
Team 3Mushrooms Jacob Teo (17), Pang Wen Yuen (18), Zhang Guangxuan (18) from Singapore |
| 9. | Team Please solve everything in 4 hours, I want to watch Na'vi vs C9 Nikola Djokic (24), Yuki Koike (18), Makoto Soejima (25) from (no specific country), representing (no specific institution) |
Team Let's Beat Benzy Jason Yuen, Joey Yu (did nothing), Imax Grey (did something and failed) (12) from Canada, representing Olympiads School |
| 10. | Team <Deobureo Minkyu Party (feat. That z-axis guy)> Minkyu Jo, Jaehyun Koo, Bumsoo Park from South Korea, representing KAIST, Seoul National University |
Team mcfxAKioi2018 Xiuhan Wang (15), Sizhe Cheng (17), Zonghan Yang (17) from China, representing Chengdu No.7 High School |
| Open division | Secondary School Division | |
|---|---|---|
| 1. | Team BasicLaw BasicLaw from China, representing 江苏省常州高级中学 |
Team BasicLaw BasicLaw from China, representing 江苏省常州高级中学 |
| 2. | Team Raise the FLAG Sagittarius from Japan |
Team Fan of lsq Yi Gu (17) from China |
| 3. | Team logicmachine logicmachine from Japan |
Team lovemathboy Xingchen Huang from Singapore |
| 4. | Team ksun48 Kevin Sun (18) from United States |
Team thjread Thomas Read (18) from United Kingdom |
| 5. | Team ifsmirnov team Ivan Smirnov (22) from Russia, representing Yandex, MIPT |
Team dogther Karl duan from China |
| 6. | Team The Same Can of Tuna Nautilus Processor (26) from Thailand, representing Rice University |
Team Euan Tebbutt Euan Tebbutt (18) from United Kingdom |
| 7. | Team GFG Yannis Chatzimichos (27) from (multiple countries) |
Team Sanja Alexandr Zayakin (18) from Latvia, representing Riga Secondary School 89 |
| 8. | Team Simon Parent Simon Benjamin Orion Parent from Canada |
Team Singleman WuHongxun (17) from China, representing Hefei No.1 high School |
| 9. | Team Apricot Timothy Loh (23) from Australia, representing Google |
Team Oisin O'Duibhir Oisín O'Duibhir (17) from Ireland |
| 10. | Team Team Sparrow Samuel Huang from Canada, representing Google |
Team John Ryan John Ryan from Ireland |