When do i have to use gcd concept in a certain problem? Like — https://codeforces.me/contest/1764/problem/B in this problem gcd is used.
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Hello, my name is Humaian. I hope you guys are fine those who are reading this blog. The thing is I need some guidance. I am participating contest and solving problems from the PROBLEMSET but when I participate in contest I can't solve A and B level problems. My cf rating is 752 max right now. What should I do ? What are the topics should I have to cover? Can anyone please Suggest me?
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