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Root
267 - Of(f) Course!
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| Total Submissions | Users that tried it | Users that solved it |
| 1368 | 183 | 90 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 15344587 | Ivor | 0.019 | ANSI C | 2015-04-18 13:06:28 | |
| 2 | 18690116 | yleewei | 0.030 | C++11 | 2017-01-28 18:32:38 | |
| 3 | 24491661 | Anadan (github.com/aaafwd) | 0.030 | C++ | 2020-01-31 12:23:37 | |
| 4 | 30453312 | Heart_Blue | 0.040 | C++11 | 2025-06-05 16:39:15 | |
| 5 | 17424058 | Qiu Qiu | 0.050 | C++11 | 2016-05-27 02:23:01 | |
| 6 | 20914452 | suzuki | 0.060 | C++11 | 2018-03-11 08:14:52 | |
| 7 | 30453311 | 关云长 | 0.060 | C++11 | 2025-06-05 16:38:53 | |
| 8 | 9834227 | Brian Fry | 0.068 | C++ | 2012-03-09 00:32:55 | |
| 9 | 6613707 | duedl0r | 0.070 | ANSI C | 2008-08-26 16:47:46 | |
| 10 | 26784830 | nehc | 0.070 | C++11 | 2021-09-18 07:44:28 | |
| 11 | 10077590 | evandrix | 0.072 | C++ | 2012-05-05 12:26:01 | |
| 12 | 8205198 | Guilherme Rodrigues Nogueira Souza | 0.080 | C++ | 2010-08-25 21:46:40 | |
| 13 | 8895561 | James Hsiao | 0.080 | ANSI C | 2011-05-28 08:13:12 | |
| 14 | 7578974 | Krzysztof Stencel | 0.084 | C++ | 2009-11-25 00:21:44 | |
| 15 | 12312202 | Ivan Dimitrov Georgiev | 0.086 | C++ | 2013-09-07 21:09:17 | |
| 16 | 5935186 | try | 0.130 | C++ | 2007-09-24 04:03:23 | |
| 17 | 5246587 | Bal4u | 0.217 | ANSI C | 2007-01-07 09:26:16 | |
| 18 | 6802221 | Vytenis Šakėnas | 0.240 | C++ | 2008-11-18 00:30:52 | |
| 19 | 877229 | Frans van Dorsselaer | 0.270 | ANSI C | 2002-05-28 19:26:57 | |
| 20 | 17246756 | Julian Alfredo Mendez | 0.290 | C++ | 2016-04-22 19:24:51 | |