Does someone have the day 1 rankings ?
In the question group, they said that they will publish it tomorrow morning.
i forgot about the mail where it said about the question group
At what hour?
When you log in, it shows "Final Standings", but they are not available.
I know I tried to open them
Where can I see statements of the first day?
You can't. They will only be available tomorrow
As far as I know, it is not allowed to share tasks or discuss solutions/scores publicly until 8:00 AM UTC+6
Here we go
Are there any online judges for this contest ?
Day 1 results
Няма такива неща колега
Про мать было лишним
Guys, did you receive problems in math and physics of second day?
day1 + day2 results
Do u have results of day2 only?
1st day https://codeforces.com/group/Uo1lq8ZyWf/contest/425650
2nd day https://codeforces.com/group/Uo1lq8ZyWf/contest/425651
Hi everyone. IZhO is finished, and I want to share with my experience on this contest. I got 353 points (100/ 100/ 30/ 51/ 67/ 5). Sorry if I will make a lot of mistakes, it's 4 at night, and I'm writing this comment just because I'm bored. So, let's start.
Any way I finished 13th (with like 10 people having the same points as I got). So I needed to do good in second day, in order to keep my position.
Next day, when I woke up my throat hurt a lot. So I took some medicine from my teacher, and 2 hours before the contest, I started feeling sleepy. Fortunately, at the beginning of the contest, my mind cleared, after I started solving problems. Also 2 hours before the contest all our participants received message with the problems of the second day in math and physics. After like 5-10 minutes, the link to the access to the problems was closed. I thought that second day may be postponed because of this, but organizers simply said to maintain academic integrity. This was very weird. I guess they tried to send this message to the translators for the international participants, but they accidently sent it to the participants. Anyway, let's talk about problems.
And that's how my contest ended. I was unsure with my position in the ranking, but obviously I hoped for good position in top 30 (usually they give gold to top 30). I was very nervous but the next day morning my coach sent me the message that I'm 22nd, and I was very happy. I'm happy with my performance, although I think I could have done a little better. I still don't understand the problem in my solution for the B of the second day and why my $$$N^2log(N)$$$ solution for the B of the first day passed. Anyway, I am waiting for the problems to be posted in the ACM Kazakhstan group or in the oj.uz. Congratulations if you achieved your expectations, if you didn't, it's the experience which worth the most, so keep up the work, do your best in the next one. It was my last IZhO, so thank you for reading this story and bye.
It passed 6 minutes since I posted this comment, and while I was rewatching my screencast video, I found one more mistake. I need problems to be posted somewhere for upsolving, so I can check if this was the reason my code failed. Please release them as soon as possible.
In B1 you can just sort the kids of every vertex in the second tree by their sizes, then you don't need to go through each kid of p, you can just binary search for the first kid, whose subtree will be increased.
Ohh, that's nice. I didn't think about that. But still, why my solution where I went through each kids passed for full.
UPD: Now you can solve problems in group ACM Kazakhstan.
I was looking for different cases to find my mistake in the solution for the problem B2. I spent like an hour or so writing stres to check, and I accidently realised that I didn't print $$$":"$$$ in some of the cases. I had a lot of this kind of stupid moments on different contests on codeforces and even on IOI, but I guess this is my biggest and at the same time so tiny mistake. I feel so dumb right now. I guess this will be a big lesson for me, so that I won't make any this type of stupid mistakes from now on. Be very careful reading the problem and looking at the output format, and hope my story helped you.
here is the difference between correct and incorrect solutions.