TWINP - TWIN PRIMES
Twin primes are the pair of prime numbers that differ by two. For example:
- 3, 5
- 11, 13
- 29, 31
The numbers in each pair differ by two.
Input
First line of input consists of T (number of test cases).
Next T lines contains a single number N (indicating the Nth pair of twin primes).
T <= 25, 1 <= N <= 10^5
Output
For every test case output the pair of twin primes in each line separated by a single space.
Example
Input: 3 1 7 11 Output: 3 5 59 61 137 139
(Another tutorial version, with limited source code length, at TWINP2.)
hide comments
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[Lakshman]:
2013-04-18 18:24:48
Got AC...I initially I was trying Rabin Miller I think the Twins prime would be less then <100000; when tried all n up to 100000 Used sieve to pass the time limit. |
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(Tjandra Satria Gunawan)(曾毅昆):
2012-08-30 17:28:22
@numerix: Thanks for your explanation. :-) For me, this problem is hard enough, my submissions give me (6 TLE and 6 WA) finally AC with 1,86s time. |
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numerix:
2012-08-30 14:51:51
@Tjandra: Because it's an easy one. You can get AC with a "normal" (or slightly modified) prime sieve - very straight forward. It could be a classical one if TL and/or SL were stricter. |
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(Tjandra Satria Gunawan)(曾毅昆):
2012-08-30 11:47:07
why this problem in tutorial? can anyone explain? |
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RAJDEEP GUPTA:
2012-04-13 18:57:10
what is the answer for n=10^5 ?
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sandeep pandey:
2012-04-11 18:30:16
@numerix:i tried same algorithm for C++ and it pass in .97 sec.
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numerix:
2012-04-11 09:05:29
@sandeep pandey: If you get TLE with Java, you must optimize your code. There are several Python solutions AC, so it shouldn't be a problem to do it with Java. |
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sandeep pandey:
2012-04-11 05:19:47
@Problem Setter:Plesae increase the TimeLimit for SlowerLanuage(Java). |
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Santhana Krishnan:
2012-04-11 05:19:47
@Francky: Did you hard code the primes ? Your time is insane. |
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Francky:
2012-04-11 05:19:47
It could have been more fun with source limit at 1000B (or even 500B), and 4s time limit for slow langages as Python.
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| Added by: | Avinash |
| Date: | 2012-04-07 |
| Time limit: | 1s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: ASM64 |
| Resource: | Own Problem |
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