Hi4ko's blog

Timus, 1793
By Hi4ko, 12 years ago, translation, In English

Problem

My attempt(WA 25)

x — Radius of truncated circle on height h. I can't understand what is false in my solution :(

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Timus, 1407th Problem
By Hi4ko, 12 years ago, translation, In English

Hello

Problem

I've already got some help. Thanks :)

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my DP has WA#8(Timus)
By Hi4ko, 12 years ago, translation, In English

Problem #1036 I've already got some help, Thanks :)

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How to compress .pdf files on Linux
By Hi4ko, 12 years ago, translation, In English

I think this topic is quite important because it's a popular problem.

"You scanned pages, made them into one .pdf file and size of this file is 300 mb. But it has to be not more than 30-40 mb". :) 
I offer you to discuss compresion methons only for GNU/Linux systems, particularly because of my egoism :) (my OS is Linux Mint 10)
That's the only method I know how to compress:

1. I installed Ghostscript and pdftk (sudo apt-get install ghostscript pdftk);
2. Converted my .pdf (240 mb)  in .ps file 
(pdf2ps file1.pdf file2.ps) . .ps'll have more size, than your .pdf(I got 400mb).
3. Then I  converted this  .ps file again to  .pdf(ps2pdf file2.ps file3.pdf)
To sum up, I got  9mb .pdf file with the same quality as 240mb's.

If somebody can expain, how can it be or knows any other methods of compression, write in comments) 

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Linux and QtCreator
By Hi4ko, 12 years ago, translation, In English

I think the best C++ IDE on Linux is QtCreator. It looks cute and only in this IDE I can debug STL containers and algos without going to their .h files :D

But sometimes it happens(but not sometimes, often), that you can't cin of scanf in this IDE(or debugger shows you an error ><). You can solve these problems by making these easy steps :)

1. If cin of scanf doesn't work

Tools -> options -> Environment -> System-> Terminal(change to xterm -e)

External Terminal : change to xterm -e -geom %Wx%H+%x+%y -e vi %f +%l +"normal %c|"

In left panel(Projects -> Run settings -> click on "Run in Terminal"

2. If debugger shows you an error, type in Terminal:
sudo echo 0 > /proc/sys/kernel/yama/ptrace_scope

Good luck :)

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Timus, Problem #1353
By Hi4ko, 12 years ago, translation, In English

http://acm.timus.ru/problem.aspx?space=1&num=1353

my code has WA #11 

How to solve it correctly with DP?

Or give me a little hint, please)

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