I've been trying to solve Pipes selection for some time, but i have not had productive ideas. The best idea so far is grouping the prefix sums by their residue modulo every prime to speedup search in some way, but I have not managed to make it work. Suggestions?
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Asia — Changchun: Pipes selection (Hard: No Accepteds...or even submissions)
Revision en2, by chubakueno, 2016-02-18 00:17:51
History
Revisions
| Rev. | Lang. | By | When | Δ | Comment | |
|---|---|---|---|---|---|---|
| en2 |
|
chubakueno | 2016-02-18 00:17:51 | 43 | ||
| en1 |
|
chubakueno | 2016-02-18 00:16:31 | 419 | Initial revision (published) |
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