Hi Codeforces Community!
Can anyone tell please what this expression (n & (-n)) returns?
Hi Codeforces Community!
Can anyone tell please what this expression (n & (-n)) returns?
| # | User | Rating |
|---|---|---|
| 1 | tourist | 3843 |
| 2 | jiangly | 3705 |
| 3 | Benq | 3628 |
| 4 | orzdevinwang | 3571 |
| 5 | Geothermal | 3569 |
| 5 | cnnfls_csy | 3569 |
| 7 | jqdai0815 | 3530 |
| 8 | ecnerwala | 3499 |
| 9 | gyh20 | 3447 |
| 10 | Rebelz | 3409 |
| # | User | Contrib. |
|---|---|---|
| 1 | maomao90 | 171 |
| 2 | awoo | 164 |
| 3 | adamant | 163 |
| 4 | TheScrasse | 159 |
| 5 | maroonrk | 154 |
| 5 | nor | 154 |
| 7 | -is-this-fft- | 152 |
| 8 | Petr | 147 |
| 9 | orz | 146 |
| 10 | pajenegod | 144 |
It will return LSB of n
like if n = 24
24 : 00011000
-24 : 2's comp. of 24 : 11100111 + 1 = 11101000
24 & (-24) : 00001000 = 8 ( LSB of 24 )
Thanks!