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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 Giovanni Botta
Getting WA over and over. I'm a little confused about how the output should be formatted. Is this correct? Input: 3 1 1 56 70 11 15 Output: [blank line] 59 61 67 [blank line] 11 13 [blank line] |
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2013-03-13 22:12:29 Giovanni Botta
@ Michael T.: thanks! will look into that. Just out of curiosity, did anybody solve this using Erathostenes sieve? |
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2013-03-13 22:12:29 Vitor Santos
I have a TLE problem, but the output is correct.. Any help? :S |
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2013-03-13 22:12:29 vinay
i am getting a NZEC error.someone please help me handle it.! |
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2013-03-13 22:12:29 arifian rahardianda
oh boy, this problem really frustrates me all day. even though the input and the output is correct. they take it as a wrong answer -______-. any idea guys?. oh, i use c for this problem, and i am a "noob", so i can't figure it out how to apply the sieve alg. Last edit: 2011-10-27 18:53:27 |
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2013-03-13 22:12:29 VIKAS SHARAN
number greater than 10 it should not divisible by 2,3,5 and 7; n output for no. less than 10 should be checked separetly |
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2013-03-13 22:12:29 Loki
Yes indeed! It is a segmented sieve |
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2013-03-13 22:12:29 Loki
This is a long long program. Last edit: 2011-10-23 20:04:05 |
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2013-03-13 22:12:29 rector george
my program receives runtime error(SIGSEGV) even though it runs just fine on my computer(i did it in c using the sieve of eratosthenes with some adjustments),i cannot make a char vector of lenght the upper bond... any ideas... Last edit: 2011-10-04 12:01:51 |
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2013-03-13 22:12:29 :D
You should use "sieve of eratosthenes" all the way in your algo. Also how many times are you doing the "find all prime numbers up to root of n". And how many do you actually need? |
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