Hey guys, could someone explain the solution of IOI Saveit problem. Thank you. :)

I wonder why so many high-rated users do not use short FOR-loop in c++. I think that there are many benefits like better readability of code and it also saves time. So, why don't users like tourist use it?

Simple question:How to write easy-to-implement brute force solutions? Which techniques do you use (like using next_permutation)?

Thank you for all answers:-)

What is the best style of naming variables in competetive programming and why?. I use long names for variables but i think it is making my code longer and harder to read.

And also it takes often really long time to make a good variable name :D

There are lot of competitions which do not allow to submit your solution after contest's end(CEOI,COCI,IOI...), but they publish test data. I think it is very hard to manually compare output data with diff and it would be much more simpler if there was program for that. Isn't there something like that? Isn't there a nice coder who could code that for us? :D :D Sorry for english.

Please tell me which problems from codeforces are best for preparation to IOI. Thank you and sorry for english :-)