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Root
520 - Append
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| Total Submissions | Users that tried it | Users that solved it |
| 1671 | 454 | 351 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 61321 | Andy Kurnia (1998) | 0.000 | C++ | 1999-04-03 09:23:39 | |
| 2 | 82868 | North South University HACKED BY S'PORE | 0.000 | C++ | 1999-07-23 02:30:15 | |
| 3 | 138648 | Andy Kurnia (1999) | 0.000 | ANSI C | 1999-11-17 17:12:41 | |
| 4 | 153918 | NUS-1999 Team | 0.000 | ANSI C | 1999-12-26 05:43:49 | |
| 5 | 1212223 | Piotr Janczyk | 0.000 | C++ | 2002-11-03 09:17:05 | |
| 6 | 18690432 | yleewei | 0.000 | C++11 | 2017-01-28 18:56:08 | |
| 7 | 19303527 | Qiu Qiu | 0.000 | C++11 | 2017-05-02 14:42:26 | |
| 8 | 21737061 | 李彦宏 | 0.010 | C++ | 2018-08-03 10:54:55 | |
| 9 | 24225452 | 兔瓦斯 | 0.010 | C++11 | 2019-11-21 06:41:20 | |
| 10 | 29679836 | Mohamed Ramy | 0.010 | C++11 | 2024-08-05 14:21:05 | |
| 11 | 29680161 | crowdforces | 0.010 | C++ | 2024-08-05 17:30:19 | |
| 12 | 9673378 | Brian Fry | 0.020 | ANSI C | 2012-01-24 22:16:29 | |
| 13 | 20909802 | suzuki | 0.020 | C++11 | 2018-03-10 14:18:27 | |
| 14 | 11681766 | nehc | 0.022 | ANSI C | 2013-04-29 03:32:19 | |
| 15 | 7709323 | Dejan Chandra Gope | 0.024 | ANSI C | 2010-01-24 17:00:37 | |
| 16 | 10033760 | evandrix | 0.024 | C++ | 2012-04-25 10:34:34 | |
| 17 | 13987552 | morris821028 | 0.026 | C++ | 2014-08-04 06:50:52 | |
| 18 | 8121824 | Robert Gerbicz | 0.028 | ANSI C | 2010-07-24 12:13:23 | |
| 19 | 9620895 | L | 0.028 | C++ | 2012-01-05 19:17:26 | |
| 20 | 6815960 | ksyu | 0.050 | C++ | 2008-11-26 02:04:31 | |