Can anyone give me some ideas for the following problem? http://lightoj.com/volume_showproblem.php?problem=1095
→ Pay attention
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | tourist | 3856 |
| 2 | jiangly | 3747 |
| 3 | orzdevinwang | 3706 |
| 4 | jqdai0815 | 3682 |
| 5 | ksun48 | 3591 |
| 6 | gamegame | 3477 |
| 7 | Benq | 3468 |
| 8 | Radewoosh | 3462 |
| 9 | ecnerwala | 3451 |
| 10 | heuristica | 3431 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | cry | 167 |
| 2 | -is-this-fft- | 162 |
| 3 | Dominater069 | 160 |
| 4 | Um_nik | 158 |
| 5 | atcoder_official | 157 |
| 6 | Qingyu | 156 |
| 7 | djm03178 | 151 |
| 7 | adamant | 151 |
| 9 | luogu_official | 150 |
| 10 | awoo | 147 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2025 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Feb/23/2025 05:15:15 (h2).
Desktop version, switch to mobile version.
Supported by
The solution idea comes from dearrangement. At a time from first m integer you have to dearrange (m-k) integer. And also from (m+1)'th to n'th integer you can dearrange them or not. So iterate over (n-m) and for every time suppose i you keep them at their position, so you have (n-k-i) integer which you can dearrange. Add those ways in every iteration. And at last multiply with mCk
Hi adamantium ,Can u provide your solution plz?
http://paste.ubuntu.com/24211669/
Thank u...