PRIMES20 - PRIMES20

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One day a mouse saw some cheese on the table but there was a cat in the house. So the mouse needed a plan to get the cat away from the table. His first idea was to make the cat chase him and then hide but then he thought of a safer idea, to go to the cat's toy basket and wind the cat's toy mouse up and make a squeak and let the toy mouse go.

So while the cat was chasing the toy mouse the real mouse climbed on the table. When he was about to climb back down the cat came back to the kitchen to drink. And saw the mouse and locked him in the cage now to open the cage mouse needs to solve one puzzle, which is given 2 numbers a and b write the smallest positive number c such that the sum of the numbers is prime.

 

INPUT

 

First line consists of an integer T and then T test cases follow.

Having the value of a and b

 

OUTPUT

 

For each test case you have to output the number c in a seperate line.

 

Constraints:

T <= 10^3

a and b will be between 1 and 10^6

 

SAMPLE EXAMPLE

Input:

1

1 1

 

Output:

1

 

 


hide comments
Francky: 2014-05-01 09:15:36

Moved to tutorial.

[Lakshman]: 2014-05-01 04:47:42

I don't understand the problem , Do we have to add c to both a ,b and check if they are prime or not?
EDIT:: Got it.

Should be in Tutorial.

Last edit: 2014-05-01 05:00:24
ivar.raknahs: 2014-04-30 13:23:08

AC:) in first attempt with py.


Added by:anuj
Date:2012-02-05
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64