# Not Able to Understand Questions on Competitive Programming

Im complete Beginner to Competitive Programming , But Recently few Days ago i learnt Sieve of Erathosthenes concept ,so i thought of solving question related to Sieve would be good . I did filtered out Question with Tags of Sieve and Easy and did sort them by submissions . Now im Reading the Question(Cute Chef Gift , Problem code :- COPAR) But Im not able to Understand What question is Asking for and Can you tell how to Understand Question related to Competitve Programing ?

You can do it without sieve, the question has asked that, chef has a sequence of numbers and you need to break it at any index. You need to check whether the 2 sequences are co-primes or not.

Explanation(2, 3, 4, 5):
First part - Second Part
2 - 5 Both are coprimes
2 3 - 4 5 Not possible since they are not coprimes
2 3 4 - 5 Possible and final solution

We break it at 3rd element.

Try solving it with this hint.

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And one more Question How to understand question ? Whenever i read question i wont be able to come up with Solution or Which concepts to use?
Any guidance on this?

Donâ€™t solve medium type questions directly, they are not supposed to be easy.
Go to beginner type questions and sort by most solved and start solving them.

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where do i have to Practice under â€śPractice Problems by difficulty levelâ€ť or â€śSearch Problems by tagsâ€ť ?
Do i have learn Concepts first and then solve or Just start solving i will learn the necessary concepts for medium level problems is it?

Donâ€™t sort it by tags since you already know what to do, this wont increase your level.
You can get a book, try Competitive Programming Handbook by Antti Laakonsen. This one is a light book and I use it too. You can also try CP3 (BIBLE OF CP) after the first book.

Solve the problems given here.

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Yes sure
Thank you