m_nigam01's blog

By m_nigam01, history, 2 months ago, In English

Hello, Codeforces!

I am solving this problem https://codeforces.com/contest/1665/problem/B

But I'm getting TLE on test case 13. I don't think there should be any TLE. Please look at my code and guide me what's wrong with my thought process. https://pastebin.com/EmhQpghv

I also optimized my code to get rid of inner while loop https://pastebin.com/5800fc8C But still get TLE on testcase 13.

Thanks for any help or suggestion!

 
 
 
 
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2 months ago, # |
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endl is slow when you print lot of lines, use "\n" instead.

Here is an accepted submission.161839419

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    2 months ago, # ^ |
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    Thanks a lot for the help But I copied you code and getting TLE still https://codeforces.com/contest/1665/submission/161854064

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      2 months ago, # ^ |
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      Submit in C++20 (64) language, not C++17

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        2 months ago, # ^ |
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        I don't know why this behavior but it got accepted thanks

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          2 months ago, # ^ |
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          The problem is that you're using an unordered_map. The expected access time is in O(1) but in the worst case, when a lot of hash collisons occur it is O(n). This leads to your solution having a time complexity of O(n^2) which ist too slow. It seems to work with C++20 because it uses a different hash function and there is no designed testcase for this hash function. Your solution should be accepted if you use map instead of unordered_map.

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2 months ago, # |
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Are you dumb? Why are you writing a blog to ask your questions? Just go to youtube or search for the solutions. Stupid.