| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 18092 | Libre3210 「CSP-S 2019」树上的数 | 0 / 0 | (None) | |
| 18128 | Libre3246 「USACO 2020.1 Platinum」Cave Paintings | 0 / 0 | (None) | |
| 18243 | Libre3365 「IOI2020」连接擎天树 | 0 / 0 | (None) | |
| 18300 | Libre3462 「WC2021」括号路径 | 0 / 0 | (None) | |
| 18354 | Libre3524 「IOI2021」钥匙 | 0 / 0 | (None) | |
| 18370 | Libre3540 「JOI Open 2018」山体滑坡 | 0 / 0 | (None) | |
| 18379 | Libre3549 「COI 2020」Paint | 0 / 0 | (None) | |
| 18468 | Libre3643 「2021 集训队互测」球球 | 0 / 0 | (None) | |
| 18811 | Libre6038 「雅礼集训 2017 Day5」远行 | 0 / 0 | (None) | |
| 18871 | Libre6099 花神游历各国 | 0 / 0 | (None) | |
| 18906 | Libre6157 A ^ B Problem | 0 / 0 | (None) | |
| 19037 | Libre6294 touch | 0 / 0 | (None) | |
| 19206 | Libre6548 「CERC2018」The Bridge on the River Kawaii | 0 / 0 | (None) | |
| 19211 | Libre6553 「CERC2018」Shooter Island | 0 / 0 | (None) | |
| 19269 | Libre6631 「EC Final 2018」异国情调的……古城 / Exotic … Ancient City | 0 / 0 | (None) | |
| 484 | P484 【基础】寻找祖先 | 0 / 0 | (None) | |
| 847 | P847 【入门】是不是亲戚 | 0 / 0 | (None) | |
| 848 | P848 【基础】修路 | 0 / 0 | (None) | |
| 849 | P849 【提高】躲避拥堵的最佳路线 | 0 / 0 | (None) | |
| 850 | P850 【基础】集合 | 0 / 0 | (None) |