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Root
1707 - Surveillance
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| Total Submissions | Users that tried it | Users that solved it |
| 803 | 231 | 185 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 18851846 | Arash Shakery ♥ | 0.200 | C++ | 2017-02-26 10:28:45 | |
| 2 | 18883870 | 赵子龙 | 0.240 | ANSI C | 2017-03-02 16:06:33 | |
| 3 | 30063311 | Li Junlin | 0.290 | C++11 | 2024-12-25 03:46:48 | |
| 4 | 25669622 | lixuyuan | 0.330 | C++ | 2020-10-29 07:09:06 | |
| 5 | 24102309 | ppp204 | 0.350 | C++11 | 2019-10-25 08:04:50 | |
| 6 | 30406210 | Jason | 0.350 | C++11 | 2025-05-17 07:56:57 | |
| 7 | 30774869 | 易姗沂 | 0.410 | C++11 | 2025-11-03 11:54:27 | |
| 8 | 26671667 | Yazmau | 0.460 | C++11 | 2021-08-10 07:19:55 | |
| 9 | 30089790 | 林哲涵 | 0.460 | C++11 | 2025-01-09 05:51:54 | |
| 10 | 17400593 | 贾跃亭 | 0.470 | C++ | 2016-05-22 13:00:06 | |
| 11 | 29851426 | cly | 0.480 | C++11 | 2024-10-07 02:22:51 | |
| 12 | 27679762 | Piper | 0.520 | C++11 | 2022-07-26 05:54:15 | |
| 13 | 27682551 | Rencj | 0.530 | C++11 | 2022-07-27 00:02:22 | |
| 14 | 18884106 | 李彦宏 | 0.540 | ANSI C | 2017-03-02 16:44:04 | |
| 15 | 29525743 | gaoziqun | 0.560 | C++11 | 2024-05-30 02:39:14 | |
| 16 | 19113714 | Mariola | 0.570 | C++ | 2017-04-05 00:09:52 | |
| 17 | 23272214 | aaaa | 0.570 | C++ | 2019-05-03 02:24:58 | |
| 18 | 25643673 | minn | 0.580 | C++ | 2020-10-22 06:37:56 | |
| 19 | 22523561 | luogu_bot3 | 0.600 | C++11 | 2018-12-30 07:39:55 | |
| 20 | 27682546 | 朱闻天 | 0.610 | C++11 | 2022-07-26 23:55:03 | |