Hello!
Welcom to the todays round! Note that this is last possibility to training before VK Cup on Codeforces — don't miss your chance! I hope, everybody will find interesting problems for him, you will not have misunderstanding with statements and there will have a harmony beteen your your solutions and our tests.
I'm an author of todays round. My name is Valeriy Samoylov, a graduated student of SPb SU. I want to thank Artem Rakhov (RAD) and Gerald Agapov (Gerald) for great help in investigation of problems.
And so I want to thank Maria Belova for translation of the statements and Alexanber Kouprin (Alex_KPR) for the statement prereading and the picture =)
Please, pay attantion to unusual problems cost in the first division:
500 — 1000 — 1500 — 2500 — 2500
And without surprise in the second division:
500 — 1000 — 1500 — 2000 — 2500
Good luck for all!
Round is postponed to 30 minutes by technically reasons. Registration is ending in 21:25.
I'm having problems when viewing task A and D for CF109 div 1 round. (http://codeforces.net/contest/154/problem/A) (http://codeforces.net/contest/154/problem/D) Error is: Unable to parse markup [type=CF_TEX]
Same here too: http://codeforces.net/blog/entry/456 but error is: Unable to parse markup [type=CF_HTML]
Anyone experiencing same problem?
all is not work during raiting contest, now this round almost started.
MGIMO finish :) Sorry, I couldn't resist.
sorrywut?
MGIMO finished
Seems CF_TEX problem is fixed. CF_HTML not yet, but i don't think it affects the problem set.
10 more minutes to practise !!!
for warm up ;)
It has been delayed for 10 minutes?
Looks like yes.
20 minutes more :( I have to work :'(
All right~ Now I have plenty of time for a cup of coffee~ It is 1:12 in the morning here... Quiet night~ :)
Any who know ¿? is wrong with Codeforces Round #110 ???
delay += 20 ;
What's going on?
contest is started at 9:30?? 30 minutes delay?
WHY???????
+30 minutes.... WTF??? :|
offf. couldn't you tell this earlier?
I can confirm eudanip is a very busy person.
I guess that next delay is 30 minutes. (10 -> 20 -> 30)
10 -> 20 -> 40?
no delay sequence is Geometric progression. so: (10 -> 20 -> 40)
All the Chinese will cry...
we are all going to die :)
Japanese and similar time zones too.
I can't lauch when contest finish... I will cry too :)
So sleepy......It's 1:15 AM in China...
I agree with you!!
=_=
It's a trap!
now is 4:00+ testing do not start???
Sorry for delay, some technical problems around "Unable to parse" forced to move the start.
Seems like it was unable to parse problem statement? :-)
I just thought because it's a Feb 29th round =)
started a new bbt episode!
Problem D (Suspects) was interesting.I got WA on pretest 2 i.e. 3 2 -1 -2 -3 Can somebody please tell why the answer cannot be Lie Truth Truth
It definitely can, but not necessary. We can't assume for all of them do they tell truth or lie.
Thanks.I had misread the question ....Missed the part "you have to be absolutely sure..."
This is only one possible assignment. For your scenario the following are possible: T T L, T L T, L T T As you can see any suspect could have lied or told the truth, therefore it's undefined for all of them.
Is system testing going to start soon? Or we can go sleep?
What about watching foorball this night?:)
I'd prefer going sleep than watching football match between our national team and another one:)
I do not mind!
D1P1
I just mistake it for only in the end of string...
I mistake it for insert or deleto any pos of the string...T T
k = 1 in Div1-D......... well this is just mean.
When will the system testing start? It's already 4 o'clock in China...I'm very sleepy >_<...
System Testing is on Div 1 now .
after that testing for Div 2 will be started ...
;)
=.=不开rating虐了petr睡不着是不是...
whaaaaaaat ?? 8D
very nice problem set, thanks :)
Nice problems! 156A is tricky!
I agree with you.I get WA in 156A because I misunderstand it.
1246567
The output of double format in C# code is wrong. There is a comma(','), not a period('.').
I think my solution is correct. but I got "wrong answer". is this a system problem or my fault?
I think you have to set the locale of your program to "en-US", but still looks like you will get Wrong Answer.
juancate is correct (in "but still looks like you will get Wrong Answer") — you are expecting, that the smallest circle is red, but it's not always truth
Looking for the editorial... When will it be available?
Today in the evening or night.
When do you offer the editorial of the contest??
Russian editoral of your division have publicated already, you can use google translate. But it is better to wait to English version.
Could you please provide direct link to the editorial?
Does anybody know if the english version of the editorial is avaliable?
No editorial yet now !!! is it published in any other blog ??? one helper has said about russian version... but I've not found any link so that I can use google translator ...
please provide the tutorial for this contest...!!
Russian version only: http://codeforces.net/blog/entry/4005