| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 195 | 195 质数口袋 | 53 / 113 | 4 | |
| 196 | 196 回文质数 | 50 / 195 | 7 | |
| 197 | 197 [NOIP 2015 提高组] 神奇的幻方 | 51 / 104 | 4 | |
| 198 | 198 杨辉三角 | 51 / 91 | 3 |
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