how can we compute the numbers of the series 2 ,4,6,10,14,22,30,46 .. for a number as large as 10^9 ?? here is my code http://ideone.com/0fuDO but it is too slow ..plz suggest me some faster method
# | User | Rating |
---|---|---|
1 | tourist | 3880 |
2 | jiangly | 3669 |
3 | ecnerwala | 3654 |
4 | Benq | 3627 |
5 | orzdevinwang | 3612 |
6 | Geothermal | 3569 |
6 | cnnfls_csy | 3569 |
8 | jqdai0815 | 3532 |
9 | Radewoosh | 3522 |
10 | gyh20 | 3447 |
# | User | Contrib. |
---|---|---|
1 | awoo | 161 |
2 | maomao90 | 160 |
3 | adamant | 156 |
4 | maroonrk | 153 |
5 | -is-this-fft- | 148 |
5 | atcoder_official | 148 |
5 | SecondThread | 148 |
8 | Petr | 147 |
9 | nor | 144 |
9 | TheScrasse | 144 |
how can we compute the numbers of the series 2 ,4,6,10,14,22,30,46 .. for a number as large as 10^9 ?? here is my code http://ideone.com/0fuDO but it is too slow ..plz suggest me some faster method
Name |
---|
This task is currently part of CodeChef contest. You should not discuss/request help/share code with others
Don't repeat my mistakes.
but i m not asking the exact answer and neither have i posted the question...i m just asking if anybody can help me in building a strategy and learning new things
You may get your answer after ending of contest.