Hi :)
Can anybody please describe how to solve this problem? Codeforces.com/A_Simple_Task
thanks a lot

Hi!
Please look at my code HHHEEERRREEE I found two wonders in my code:

1- I didn't include vector but didn't got COMPILATION ERROR <<
2- $@#%!%^ (OK)

How situation 1 is possible?
thanks a lot

hi :)
is it possible make all this operations with BIT?
1- add(l, r, val) >add a[l..r] value of val
2- sum(l, r) >calculate sum of a[l..r]

I thought it is impossible until saw this comment
I didn't understand it correctly :( can anybody explain the approach:)
Tks a lot

Hi!
can you please tell me why people use vector while deque do the same with much more features :(

Hello :-)
how can count total different path between one vertex to any other in GOOD ORDER
also how to count total paths between one vertex to an other vertex?

• Hi:)
• Can anyone please tell me what is Z-Algorithms? is it Important to know it for IOI?
• thanks in advance :-) :-) :-)
• BTW: how to go new line in codeforces blog?