can any one give me hints for these problem Link
I found an editorial in Chinese so I am here for the help!!
can any one give me hints for these problem Link
I found an editorial in Chinese so I am here for the help!!
| № | Пользователь | Рейтинг |
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| 3 | Kevin114514 | 3603 |
| 4 | jiangly | 3583 |
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| 6 | tourist | 3541 |
| 7 | strapple | 3515 |
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| Страны | Города | Организации | Всё → |
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|---|---|---|
| 1 | Qingyu | 157 |
| 2 | adamant | 153 |
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| 4 | Proof_by_QED | 146 |
| 5 | Dominater069 | 145 |
| 6 | errorgorn | 142 |
| 7 | cry | 139 |
| 8 | YuukiS | 135 |
| 9 | TheScrasse | 134 |
| 10 | chromate00 | 133 |
The last 7 pages of the official editorial include an English translation of the problem editorial.
bruh nevermind
You do realise that the value $$$2^{n-1}$$$ will require $$$O(n)$$$ space and that if statement (or even addition) will no longer be a constant operation. It'll take $$$O(n)$$$ time to do these operations (assuming you store them in a proper Big Integer datatype and not what you have written here)
how stupid of me... (1<<n) with n = 2000, sorry)