help..TWO FRIENDS AT THE ZOO

can anybody please help in solving the problem


what is wrong with solution:
https://www.codechef.com/viewsolution/12835638

Dear! You are over-complicating a simple question!

Here, note this observation.

Lets say that a number n has factor f and multiple m.
Now, we can say n=kf since f is factor of n. [k is a integer]

And m is l*n , where l is another integer.

==>m= k x l x f.
==>m is divisible by f. Agree?

So all you need to do is a divisibility test!!

Check my solution [here][1]

EDIT1- I think what you are trying to do, is supposing if multiple is negative, like 3 x (-2) = -6. Have a look at constraints. It states that f and m >0. And since multiple, by definition, is an integral multiple of n, it is guaranteed that m>f. I hope this helps you dear!! :slight_smile:
[1]: https://www.codechef.com/viewsolution/12835778

1 Like

@viral

Your code is giving time limit exceeded in cases like

factor = 2 , multiple = 10^18

Because of multiple test cases, what your program does is to subtract it till f and m become equal or something. This is making it do ALOT of unnecessary operation which lead to it exceeding time limit. Use % operator and the Q will be easily solved!!

Hope it answered your query!! :slight_smile:

I did not face like this problems. Really i have no idea about this problems. Hope so many people watching this post. Some one having good knowledge about this will help you to get the exact solution for your problem. Be cool and wait for wonderful answers.

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thanks…but i din’t get one thing…what is wrong with my code?

Give me ~10 minutes, I will debug it for you.

yup
thanks!!:slight_smile: