2019年暑假班信奥三阶班作业，测试对数据结构堆栈的掌握程度。
| Standing | User | Nick Name | Solved | TIME PENALTY | A | B | C |
| 1 | yangyuhan | 2 | 60:08:05 | 29:41:46 | 30:26:19 | ||
| 2 | lefanchen | 2 | 510:02:05 | (-1) | 50:03:52 | 459:58:13 | |
| 3 | lsz123 | 2 | 1341:53:14 | 635:20:38 | 706:32:36 | ||
| 4 | lixuanyu | 2 | 1341:59:42 | 635:20:03 | 706:39:39 | ||
| 5 | crisp | 2 | 1342:24:39 | 635:10:07 | 707:14:32 | ||
| 6 | 2519885xxx2b | 2 | 1413:29:35 | 706:58:38 | 706:30:57 | ||
| 7 | wammwa88 | 1 | 30:26:01 | 30:26:01 | (-1) | ||
| 8 | zhouyi1975 | 1 | 395:14:26 | 395:14:26 | |||
| 9 | admin | 1 | 436:52:52 | 436:52:52 | |||
| 10 | zhanghaoxuan | 1 | 635:23:21 | 635:23:21 | |||
| 11 | ooooo0808 | 1 | 706:48:17 | 706:48:17 | |||
| 12 | Peaterlee3 | 1 | 727:25:19 | (-1) | 727:25:19 |