Problem authors
| Zack Butler | 11 | 5.3Medium |
| Zhang Guangxuan | 7 | 6.2Hard |
| Zhuowei Wen | 1 | 9.1Hard |
| Ziyi Tang | 2 | 3.6Medium |
| Zvonimir Medić | 1 | 5.8Hard |
| anonymous | 1 | 4.8Medium |
| skylinebaby | 1 | 8Hard |
| the 2023 ICPC World Finals judges | 2 | 6.6Hard |
| Ásdís Thu Minh Huynh | 2 | 1.8Easy |
| Ómar Högni Guðmarsson | 2 | 1.8Easy |
| Óðinn Eyjólfsson | 2 | 4.1Medium |
| Øyvind Grotmol | 8 | 6.3Hard |
| Øyvind Haarberg | 4 | 4.9Medium |
| Łukasz Kalinowski | 1 | 7Hard |
| Łukasz Matylla | 1 | 8.5Hard |