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Help in optimizing this cs academy problem .
The problem asks to toggle bits in a certain range that after certain operations all bits becomes 0 .
My O(N2) solution is for a given light bulb if it is on the switch it off and update all the given ranges , but this will be N^2 complexity . How can we reduce it to O(n) . The last lines of the editorial i couldn't understood , how the author is updating the ranges .
how to do it . ?
| Rev. | Язык | Кто | Когда | Δ | Комментарий | |
|---|---|---|---|---|---|---|
| en5 |
|
atlasworld | 2019-03-07 00:15:38 | 308 | ||
| en4 |
|
atlasworld | 2019-03-07 00:14:57 | 458 | ||
| en3 |
|
atlasworld | 2019-03-06 23:48:42 | 8 | Tiny change: 'bits in a certain range th' -> 'bits in a given range th' | |
| en2 |
|
atlasworld | 2019-03-06 23:46:44 | 21 | Tiny change: 'ges . \n\n\n\n' -> 'ges . \n\nhow to do it . ? \n\n\n\n' | |
| en1 |
|
atlasworld | 2019-03-06 23:46:02 | 578 | Initial revision (published) |
