| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 23 | 23 [R4E]区间异或和 | 115 / 483 | 7 | |
| 88 | 88 [R15D]二维异或和 | 205 / 689 | 6 | |
| 178 | 178 [R29E]矩形求和 | 31 / 233 | 8 | |
| 196 | 196 [R32E]回文串 | 48 / 296 | 8 | |
| 226 | 226 [R37E]走亲访友 | 26 / 157 | 8 |
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