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PRIME1 - Prime Generator |
Peter wants to generate some prime numbers for his cryptosystem. Help him! Your task is to generate all prime numbers between two given numbers!
Input
The input begins with the number t of test cases in a single line (t<=10). In each of the next t lines there are two numbers m and n (1 <= m <= n <= 1000000000, n-m<=100000) separated by a space.
Output
For every test case print all prime numbers p such that m <= p <= n, one number per line, test cases separated by an empty line.
Example
Input: 2 1 10 3 5 Output: 2 3 5 7 3 5Warning: large Input/Output data, be careful with certain languages (though most should be OK if the algorithm is well designed)
Information
After cluster change, please consider PRINT as a more challenging problem.| Added by: | Adam Dzedzej |
| Date: | 2004-05-01 |
| Time limit: | 6s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: NODEJS PERL6 |
hide comments
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2013-03-13 22:12:29 strings
what is output if input is 34 36 or the likes... i print one blank line for such test cases and rest of the code runs well on ideone @1.33 sec and even on my comp... |
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2013-03-13 22:12:29 numerix
@Julian Leyh: There are already 20 AC Ada solutions. You have to think about another approach ... |
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2013-03-13 22:12:29 Julian Leyh
Heap for Ada seems to be too small.. I can't allocate an array of Boolean with 1000000000 elements. |
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2013-03-13 22:12:29 Ravi Upadhyay
you'll have to use sieves to generate primes maybe upto sqrt(10^9) and then running the sieve again on the nos. bw. m and n using those primes you have calc. earlier. |
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2013-03-13 22:12:29 Shraddha Jain
wht cn b the cause of time limit exceeded..... |
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2013-03-13 22:12:29 Atul Jangra
My Code is running perfectly for case : 1 999900000 1000000000 on my machine . but when i am uploading it here , it says Time Limit Exceeded. Plus when I try to Run it on www.ideone.com . there it gives : result: Runtime error time: 0.24s memory: 212672 kB signal: 25 (SIGXFSZ) Somebody help Please . I am not getting anything about what the problem is . |
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2013-03-13 22:12:29 i am shit
i dont understand the problem, please help |
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2013-03-13 22:12:29 H. Gilles
So ruby and eratosthenes' sieve don't work very well together Last edit: 2011-12-17 03:23:33 |
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2013-03-13 22:12:29 Vivek
I ran in ideone with inputs 999900000 and 1000000000......and it ran perfectly taking only 2.36s but here if I run I'm getting time limit exceeded..........:( |
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2013-03-13 22:12:29 Miguel Saiz
@Radnus Mayhs I believe it doesn't test with that data. SPOJ tests with a much larger sample which may then exceed the time limit, even if it doesn't in your computer. I may be wrong though. |
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