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
5
Warning: 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
urblakeenened: 2019-08-13 14:04:51

Hi ALL, iam new to c++ my code have time issue can some one tell me what i can do to make it faster

i am using pair<int,int>
sqrt(n) method
and 4 for loops
1st for loop for input
2nd to caal by reference the prime function
3 and 4 are inside the prime generator



Last edit: 2019-08-13 14:07:59
vanshs: 2019-08-13 04:13:12

Make sure that your segmented sieve only goes up to root of n. This will avoid TLE.

akshaypritmani: 2019-08-08 20:49:35

while ideone my program. it compiling in 0.1 sec. and in your compiler time limit is existing

amankush: 2019-08-03 13:50:57

Giving TLE when i used nested for loops and runtime error(SIGFPE) when used recursion reducing one loop which identify the no prime.HELP---

Last edit: 2019-08-03 13:52:03
switzel: 2019-07-29 12:58:08

I used the segmented sieve algo. The code works fine in visual studio ide but gives segmentation fault in spoj (runtime error(SiGSEGV). How to remove that error.

Last edit: 2019-07-29 12:58:44
neerajamoniya: 2019-07-29 08:29:31

Used segmented seive but it is still giving TLE......

freakypandit: 2019-07-23 16:15:58

It gives me a time limit exceeded error every time. I tried running code on jDoddle online compiler, the time is 0.04s with 5 test cases. What could be the problem?

mukul_9: 2019-07-18 06:53:34

How to fix runtime error in python 3??
So basically please tell me how to take input from python which works for this site!

pop1912: 2019-07-10 05:33:11

It says TIME LIMIT EXCEEDED, but my JAVA code is perfect, what I must do to reduce Time, I'm a non-CS student, Wrote code using for loops...

phatkararnav: 2019-07-06 20:35:25

Just a few tips :-
1):- If you use array indexing above 10^8 you will get NZEC error.
2):- In this Segmented Sieve algorithm is used. Before learning this first learn Simple Sieve of Eratosthenes.


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