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I_am_THE_Duck's blog

By I_am_THE_Duck, history, 5 months ago, In English,

Is the codeforces judge down right now? My submission has been in queue for the past 15 minutes or so.
Update: Cause found.

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By I_am_THE_Duck, history, 5 months ago, In English,

I was recently talking with a cf user on codeforces talks. But when I am trying to send a message, it shows that "something has broken down in codeforces" and the message is not being sent. So is everybody experiencing this or is it only me? Also, how to fix it?

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By I_am_THE_Duck, history, 5 months ago, In English,

Could someone please explain how to implement segment trees and how do they work ? I tried to go through many tutorials, but cannot wind my head around it.

Note : I am a Newbie

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By I_am_THE_Duck, history, 5 months ago, In English,

Given two integers $$$A$$$ and $$$B$$$, find $$$A$$$ $$$\oplus$$$ $$$($$$ $$$A$$$ $$$+$$$ $$$1$$$ $$$)$$$ $$$\oplus$$$ $$$($$$ $$$A$$$ $$$+$$$ $$$2$$$ $$$)$$$ $$$\oplus$$$ $$$\dots$$$ $$$\oplus$$$ $$$B$$$ where $$$A$$$ $$$<=$$$ $$$B$$$

No, not in linear time

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