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Root
10563 - Least Squares
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| Total Submissions | Users that tried it | Users that solved it |
| 1215 | 344 | 244 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 17207014 | Pham Huu Canh - HUBT University | 0.010 | C++ | 2016-04-15 16:07:59 | |
| 2 | 18649064 | Arash Shakery ♥ | 0.010 | C++ | 2017-01-19 17:29:14 | |
| 3 | 7325808 | Krzysztof Stencel | 0.016 | C++ | 2009-08-18 17:17:29 | |
| 4 | 6047618 | Peter Lin | 0.020 | C++ | 2007-11-13 14:57:15 | |
| 5 | 6117296 | Adelar da Silva Queiróz | 0.020 | C++ | 2007-12-14 21:47:28 | |
| 6 | 6233163 | Christephan | 0.020 | C++ | 2008-02-14 09:30:01 | |
| 7 | 9635949 | nehc | 0.020 | ANSI C | 2012-01-11 13:43:25 | |
| 8 | 20513358 | David Guzuman | 0.020 | C++ | 2017-12-20 04:56:51 | |
| 9 | 22593184 | henry | 0.020 | C++11 | 2019-01-11 03:23:27 | |
| 10 | 24210131 | 兔瓦斯 | 0.020 | C++11 | 2019-11-18 06:56:38 | |
| 11 | 24930544 | ArvinTsai | 0.020 | C++11 | 2020-04-25 12:23:51 | |
| 12 | 26733323 | 赵子龙 | 0.020 | C++11 | 2021-08-31 23:43:47 | |
| 13 | 28856204 | bear | 0.020 | C++11 | 2023-10-14 11:13:13 | |
| 14 | 7158435 | MengHuan Yu | 0.024 | C++ | 2009-05-28 15:53:18 | |
| 15 | 9512598 | Kevin Atienza | 0.024 | C++ | 2011-11-27 19:53:04 | |
| 16 | 10691932 | Pol Mauri | 0.024 | C++ | 2012-10-06 00:05:08 | |
| 17 | 7836666 | Bartosz Dabrowski | 0.028 | C++ | 2010-03-21 15:55:06 | |
| 18 | 11329906 | Henry Kao | 0.028 | C++ | 2013-02-23 07:01:56 | |
| 19 | 16045453 | Bruno Sanches | 0.029 | C++11 | 2015-09-04 17:50:22 | |
| 20 | 6087841 | dreamoon | 0.030 | C++ | 2007-11-30 12:56:56 | |