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Help needed in a number theory problem?
PDF LINK: http://lightoj.com/volume_showproblem.php?problem=1138&language=english&type=pdf Problem link: http://lightoj.com/volume_showproblem.php?problem=1138
I think the solution is the number of 5s as prime factor in N! But how to calculate them faster.
| Rev. | Lang. | By | When | Δ | Comment | |
|---|---|---|---|---|---|---|
| en3 |
|
i_am_eating_wa_and_tle | 2017-12-28 22:52:25 | 18 | Tiny change: 'PDF LINK: ' -> '**UPD:**Got AC\n\nPDF LINK: ' | |
| en2 |
|
i_am_eating_wa_and_tle | 2017-12-28 21:10:06 | 2 | Tiny change: 'lem=1138\nI think ' -> 'lem=1138\n\nI think ' | |
| en1 |
|
i_am_eating_wa_and_tle | 2017-12-28 21:09:45 | 297 | Initial revision (published) |
