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Root
849 - Radar Tracking
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| Total Submissions | Users that tried it | Users that solved it |
| 1000 | 123 | 40 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 1182770 | Grzegorz Juchnikowski | 0.000 | C++ | 2002-10-21 11:55:54 | |
| 2 | 16673319 | try | 0.000 | C++ | 2016-01-06 03:56:12 | |
| 3 | 17154434 | Qiu Qiu | 0.000 | C++11 | 2016-04-06 09:39:03 | |
| 4 | 17317522 | Robert Lyon | 0.000 | C++11 | 2016-05-05 17:53:14 | |
| 5 | 17536009 | Stanislav Zholnin | 0.000 | C++11 | 2016-06-17 21:44:57 | |
| 6 | 20863221 | suzuki | 0.000 | C++11 | 2018-03-03 14:40:51 | |
| 7 | 21349490 | Ayaka Ikezawa | 0.000 | C++11 | 2018-05-22 08:25:55 | |
| 8 | 21443768 | 刘玄德 | 0.000 | C++11 | 2018-06-08 08:04:57 | |
| 9 | 21549736 | chris | 0.000 | C++ | 2018-07-04 16:26:53 | |
| 10 | 23447767 | Lawrence Leung | 0.000 | ANSI C | 2019-06-07 11:10:59 | |
| 11 | 26536152 | seed_zero | 0.000 | C++ | 2021-07-02 18:54:40 | |
| 12 | 26674898 | 周鸿祎 | 0.000 | C++11 | 2021-08-11 06:23:22 | |
| 13 | 30361469 | albert | 0.000 | C++11 | 2025-04-30 15:10:54 | |
| 14 | 31051171 | 刘强东 | 0.000 | C++11 | 2026-03-29 11:44:34 | |
| 15 | 31051184 | 赵子龙 | 0.000 | C++ | 2026-03-29 11:56:19 | |
| 16 | 31051185 | 黄汉升 | 0.000 | C++11 | 2026-03-29 11:57:51 | |
| 17 | 31051239 | 李彦宏 | 0.000 | C++ | 2026-03-29 13:11:37 | |
| 18 | 1564396 | Eric Schmidt | 0.002 | ANSI C | 2003-05-04 11:41:10 | |
| 19 | 2626206 | Yoo Won-seok | 0.002 | ANSI C | 2004-06-27 14:59:41 | |
| 20 | 3595477 | Arne Alex | 0.002 | ANSI C | 2005-05-25 21:19:56 | |