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Root
944 - Happy Numbers
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| Total Submissions | Users that tried it | Users that solved it |
| 4633 | 1111 | 928 |
| Top 20 | ||||||
| Ranking | Submission | User | Run Time | Language | Submission Date | |
| 1 | 17442379 | Michael Hayter | 0.000 | C++11 | 2016-05-30 18:36:12 | |
| 2 | 16890387 | Yoonsik Oh | 0.009 | C++11 | 2016-02-23 08:19:44 | |
| 3 | 7073407 | shshin | 0.010 | C++ | 2009-04-16 09:52:23 | |
| 4 | 19259762 | feodorv | 0.010 | ANSI C | 2017-04-26 01:30:13 | |
| 5 | 22618737 | amy | 0.010 | C++11 | 2019-01-16 09:24:00 | |
| 6 | 7698965 | Luis García | 0.016 | C++ | 2010-01-19 21:54:48 | |
| 7 | 16963110 | Morass | 0.019 | C++11 | 2016-03-06 22:03:46 | |
| 8 | 6165296 | Rio | 0.020 | C++ | 2008-01-11 10:13:46 | |
| 9 | 10598875 | parabellum (fr) | 0.032 | C++ | 2012-09-13 20:03:46 | |
| 10 | 6234267 | Robert Gerbicz | 0.040 | C++ | 2008-02-14 22:32:50 | |
| 11 | 17587889 | BEAN | 0.040 | C++11 | 2016-06-28 14:04:27 | |
| 12 | 17913439 | Amanita | 0.040 | C++11 | 2016-08-28 18:18:00 | |
| 13 | 18898922 | sofia | 0.040 | C++11 | 2017-03-04 19:28:54 | |
| 14 | 19259734 | 李彦宏 | 0.040 | C++11 | 2017-04-26 01:22:23 | |
| 15 | 19927606 | Mahmud Sajjad Abeer | 0.040 | C++11 | 2017-08-28 11:30:50 | |
| 16 | 20175245 | 马化腾 | 0.040 | C++11 | 2017-10-14 09:40:26 | |
| 17 | 20176619 | Saifullah Talukder | 0.040 | C++11 | 2017-10-14 14:19:43 | |
| 18 | 20843069 | 马孟起 | 0.040 | C++11 | 2018-02-28 03:11:10 | |
| 19 | 15923384 | Zyaad Jaunnoo | 0.046 | C++11 | 2015-08-12 12:17:12 | |
| 20 | 16710498 | M4G!C!4N | 0.046 | ANSI C | 2016-01-15 16:05:55 | |