| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 220 | SDNU1299 足球明星 | 0 / 0 | (None) | |
| 415 | SDNU1660 前缀和Ⅳ | 25 / 50 | 4 | |
| 469 | SDNU1706 区间mex | 3 / 12 | 6 | |
| 493 | TEST1004 ljd想要考验小登 | 5 / 36 | 6 |
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