| 출처 | 하위 출처 | 풀 수 있는 문제 | 총 문제 |
|---|---|---|---|
| Central European Regional Contest | 22 | 461 | 549 |
| Mid-Central European Regional Contest | 2 | 17 | 17 |
| Northeastern European Regional Contest | 21 | 221 | 429 |
| Northwestern European Regional Contest | 21 | 680 | 693 |
| Southeastern European Regional Contest | 17 | 139 | 177 |
| Southwestern European Regional Contest | 16 | 144 | 169 |