APS - Amazing Prime Sequence
Bablu is very fond of Series and Sequences...
After studying Fibonacci Series in Class IX, he was impressed and he designed his own sequence as follows...
a[0] = a[1] = 0
For n > 1, a[n] = a[n - 1] + f(n), where f(n) is smallest prime factor of n.
He is also very fond of programming and thus made a small program to find a[n], but since he is in Class IX, he is not very good at programming. So, he asks you for help. Your task is to find a[n] for the above sequence....
Input
Your code will be checked for multiple Test Cases.
First Line of Input contains T (<= 100), the number of Test Cases.
Next T lines contain a single number N. (1 < N < 10^7).
Output
Single line containing a[n] i.e. nth number of the sequence for each test case.
Example
Input: 3 2 3 4 Output: 2 5 7
hide comments
abdelkarim:
2013-02-15 12:58:30
@chicku
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chicku:
2013-02-15 11:33:23
what it is doing in classical problem. just move it to tutorial man!!! |
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Ankit Paharia:
2013-02-15 11:33:23
very nice problem ... !!! |
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:D:
2013-02-15 11:33:23
Alex, what do you mean by bad input? Do you think there are some errors or is it simply not using extreme values for N? |
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(Tjandra Satria Gunawan)(曾毅昆):
2013-02-15 11:33:23
first place :-D
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abdelkarim:
2013-02-15 11:33:23
nice one . Last edit: 2013-02-15 05:07:56 |
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Ehor Nechiporenko:
2013-02-15 11:33:23
APS: Amazing problem seriously! Last edit: 2013-02-14 20:44:59 |
Added by: | c[R]@zY f[R]0G |
Date: | 2013-02-14 |
Time limit: | 1s |
Source limit: | 5000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |