| # | ID | Name | Difficulty | Solver |
|---|---|---|---|---|
| 1 | code_festival_morning_med_c | C. eject | 1983 | 629 |
| 2 | abc305_g | G. Banned Substrings | 1989 | 1350 |
| 3 | abc204_f | F. Hanjo 2 | 2044 | 1380 |
| 4 | abc199_f | F. Graph Smoothing | 2065 | 1467 |
| 5 | abc009_4 | D. 漸化式 | 2213 | 1365 |
| 6 | abc256_g | G. Black and White Stones | 2250 | 1000 |
| 7 | abc129_f | F. Takahashi's Basics in Education and Learning | 2621 | 1178 |
| 8 | abc212_h | H. Nim Counting | 2741 | 751 |
| 9 | arc025_4 | D. コンセント | 2863 | 77 |
| 10 | dp_r | R. Walk | null | 7335 |
| 11 | ddcc2020_final_b | B. Hawker on Graph | null | 106 |