| Group A: Students | Group B: Researchers | Group C: Professionals | ||||
| min | max | min | max | min | max | |
| Programming experience (years) | 1 | 1 | 2 | 5 | 8 | 10 |
| Size of biggest project (NCLOC) | 500 | 1000 | 1500 | 7000 | 15,000 | 30,000 |