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4:49 AM
@jeea it is to be solved using convex hull trick on a 2d dp
also btw how did you find me here from my codechef id? i did not put my name on the codechef id
 
 
1 hour later…
6:03 AM
@GaurangTandon I saw your posts here, and on codechef you were on top 5 and I opened it the name was Gaurang, and username was sigma_g. Here your profile image is sigma g!
Can you tell me sources to follow to be good at solving competition problems, one book I know is by antii laaksonen which I have read a little. Other than that how to systematically improve on competition programming
 
6:48 AM
@jeea ok
@jeea i don't know which stage you're at right now, but for any rating below <2000 on codeforces/codechef you don't need any books. Just solve every long challenge regularly, that should be enough. Learn new techniques as they come at you, for example, convex hull trick was new for me which I learnt because of this question. That's really all there is to it.
Also read editorials for problems you weren't able to solve
 
7:06 AM
@GaurangTandon Ok thank you a lot!
 
 
2 hours later…
8:48 AM
1
Q: Two one-sided arrows from mhchem MathJax extension do not render properly upon conversion to pdf

mannaiaI am using pdfkit-pythonbased on wkhtmltopdfto convert into pdf a text that contains MathJax with mhchemextension. All works fine on the browser, like in the case : $\ce{A <=> B + C}$ where I have used $\ce{<=>}$ to draw the so-called two one-sided arrows. However, this is what I get after co...

 
 
5 hours later…
1:39 PM
2
Q: How to make 1,1-diphenyl-1-butene from benzophenone and 1-bromopropane?

JanI would like to know the method of syntheses of making 1,1-diphenyl-1-butene $(\ce{C16H16})$ from benzophenone $(\ce{(C6H5)2CO},$ generally abbreviated $\ce{Ph2CO})$ and 1-bromopropane $(\ce{CH3CH2CH2Br}).$ I think that the carbonyl group which is a functional group composed of a carbon atom do...

 
 
6 hours later…
7:15 PM
@GaurangTandon Is that a LOWER-FRIGGING-CASE I I see right there?
I have a sudden urge to kick things. And people.
Or maybe kick things so they'd go flying to hit people.
@Secret Oh my God I still need to gain some XP to get to that level.
@Mithoron I'm on the tip of the needle right now, so in a month I'd be able to say whether or not I'll finally become more active again or continue my Skywalker exile.
Until then, no promises.
 
 
1 hour later…
8:36 PM
@M.A.R.ಠ_ಠ Oh no, that leads to dark side ;)
 

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