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, nm<=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.hide comments
suyashky:
20180731 15:35:14
Do not forget to check 1! 

vishalroybitp:
20180729 18:18:25
What the heck.Tried running sqrt(),n,n/2.and guess what still TLE.


danfrown:
20180721 18:36:29
Well god help me. I ran the loop till sqrt(n) till n/2 till n. And guess what? I still get time limit exceeded. I'm using C. Help me... Anyone..?


amoghraj:
20180719 06:20:22
for anyone struggling with time complexity ....check divisibility up to the sqrt(x) instead of x/2 ! worked for me 

sourav_bh:
20180719 05:45:48
Tle in c. 

neel_2000:
20180718 13:32:28
How shall I make sure the time limit is not exceeded while I am using C++(gcc 4.3.2) ? 

learnerinblack:
20180714 21:05:39
Done in O(sqrt(N)*loglogN) + t*(mn)) N = 1e9 :D 

rogu_auto:
20180713 16:02:35
i think u should code this with pascal :) 

shubham_here:
20180711 08:14:33
How to take input m and n using std::cin in c++ seperated by spaces. 

nitishyadav169:
20180703 08:52:38
trongtd1973 what will we use at the place of %?

Added by:  Adam Dzedzej 
Date:  20040501 
Time limit:  6s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: NODEJS PERL6 