| 출처 | 하위 출처 | 풀 수 있는 문제 | 총 문제 |
|---|---|---|---|
| Central European Regional Contest | 21 | 401 | 505 |
| Mid-Central European Regional Contest | 2 | 17 | 17 |
| Northeastern European Regional Contest | 20 | 199 | 405 |
| Northwestern European Regional Contest | 20 | 615 | 628 |
| Southeastern European Regional Contest | 16 | 114 | 165 |
| Southwestern European Regional Contest | 15 | 128 | 153 |