Why am i getting WA? my code here. Please help :(
Also i tried to find the editorial. But couldn't find any. Was the editorial ever published?
Why am i getting WA? my code here. Please help :(
Also i tried to find the editorial. But couldn't find any. Was the editorial ever published?
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| Страны | Города | Организации | Всё → |
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| 8 | maroonrk | 134 |
| 9 | BledDest | 132 |
| 10 | qwexd | 129 |
http://codeforces.me/blog/entry/6864. Here's the editorial, but it's on russian.
thanks :) but the translator isn't so good :( can u plz explain the idea?
Let's use two arrays. le[i] = the leftmost index that the sequence a[le[i]], a[le[i] + 1], a[i] — decreases. re[i] = the rightmost index that the sequence a[i], a[i + 1], a[re[i]] — increases. A sequence l,r is ladder if (re[l] >= le[l]).