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| ID | Problem Show tags Hide tags | AC / Tried | Difficulty |
|---|
| 8440 | P9286 [ROI 2018] Extraction of radium | 0 / 0 | 3 | |
| 8445 | P9287 [ROI 2018] Viruses | 0 / 0 | 3 | |
| 8441 | P9288 [ROI 2018] Innophone | 0 / 0 | 7 | |
| 8447 | P9289 [ROI 2018] Quantum teleportation | 0 / 0 | 7 | |
| 8446 | P9290 [ROI 2018] Decryption | 1 / 5 | 4 | |
| 8450 | P9291 [ROI 2018] Quick sort | 0 / 0 | 6 | |
| 8448 | P9292 [ROI 2018] Robomarathon | 0 / 0 | 5 | |
| 8449 | P9293 [ROI 2018] Addition without carry | 0 / 0 | 7 | |
| 10133 | P10649 [ROI 2017] 四轴飞行器编程 (Day 1) | 0 / 0 | 4 | |
| 10099 | P10650 [ROI 2017] 排序幻觉 (Day 1) | 0 / 0 | 4 | |
| 10100 | P10652 [ROI 2017] 前往大都会 (Day 1) | 0 / 0 | 6 | |
| 10098 | P10653 [ROI 2017] 存储器 (Day 2) | 0 / 0 | 5 | |
| 10101 | P10654 [ROI 2017] 水星上的服务器 (Day 2) | 0 / 0 | 4 | |
| 10102 | P10655 [ROI 2017] 反物质 (Day 2) | 0 / 0 | 4 | |
| 10103 | P10656 [ROI 2017] 学习轨迹 (Day 2) | 0 / 0 | 7 |
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