10826 - Hot or Cold?

All about problems in Volume 108. If there is a thread about your problem, please use it. If not, create one with its number in the subject.

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Observer
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Location: Hong Kong

Hot and Cold - Problem G in recent contest (10826)

Post by Observer »

Hi,

I've read problem G in the recent contest, and I find it quite interesting. Although I haven't attempted this task, I would like to know whether there exists a greedy solution. This is because I'm writing a number-guessing task similar to this (not a decision-making one though), and I want to make sure that the "guessing method" stated in that doesn't solve this task. :P

Thanks in advance. :wink:

- EDIT -

Since no one replies, I assume that there aren't any greedy / trivial solutions to this task. Should that be true, I'll continue writing my task. :wink:

Bye~
7th Contest of Newbies
Date: December 31st, 2011 (Saturday)
Time: 12:00 - 16:00 (UTC)
URL: http://uva.onlinejudge.org

Cho
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Post by Cho »

I believe there is greedy or some other kind of deterministic method to make correct guesses for this problem. Since, the performance the of the code of the top solvers is incredibly fast. They take only 0s. For the rest who solve the problem in standard way (well.. I believe we all solve it in pretty much the same way) take more than 1s. It's a huge gap.

..
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Post by .. »

Well.... I would guess they are sending a table....Just 300 numbers
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Cho
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Post by Cho »

I see.
I've forgot this option...

Dreamer#1
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10826 - Hot or Cold?

Post by Dreamer#1 »

can someone please verify the following intput/outputs. thanks.

Code: Select all


Intput:

1
2
3
4
5
6
7
8
9

Output:

1
3
4
5
5
6
6
6
7


Cho
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Joined: Wed Oct 20, 2004 11:51 pm
Location: Hong Kong

Post by Cho »

My output:

Code: Select all

1 guess(es) required.
3 guess(es) required.
4 guess(es) required.
5 guess(es) required.
5 guess(es) required.
5 guess(es) required.
6 guess(es) required.
6 guess(es) required.
6 guess(es) required.

Dreamer#1
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Post by Dreamer#1 »

thanks bro got AC :)

but what a stupid copy-pasting error i made :(

ibrahim
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Post by ibrahim »

Can you please give me some hints. :)

Ibrahim

Dreamer#1
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Post by Dreamer#1 »

if i'm not wrong you are from Bd, the truck behind you in the pic tells me that and most probably you are new to problem solving.
i'm sorry but i think the best hint i can give you is try the other problems first. its not a very easy problem as you might have thought at the first look. never mind may be someday you will solve even tougher problems than this one so be patient and keep solving.

best of luck

ibrahim
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Location: Northern University, Bangladesh
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Post by ibrahim »

Dreamer#1 wrote:if i'm not wrong you are from Bd, the truck behind you in the pic tells me that and most probably you are new to problem solving.
i'm sorry but i think the best hint i can give you is try the other problems first. its not a very easy problem as you might have thought at the first look. never mind may be someday you will solve even tougher problems than this one so be patient and keep solving.

best of luck
Thanks Dreamer. You are right, I am from bd.:D And i will try to follow your hints. :wink:

DreamLinuxer
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Post by DreamLinuxer »

Could someone give me some hint please.

abishek
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Post by abishek »

only hint that I wish to give is that the problem says n <=300, think about this!!

galkovsk
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Post by galkovsk »

Hm. I can't find an explanation, why my program gets WA. Maybe, someone can verify my output? Everything, posted on this forum is as mine ouput.

Here is input:

Code: Select all

9
10
17
18
27
28
60
65
68
70
73
75
300
0
MY output:

Code: Select all

6
7
7
8
8
9
10
10
10
10
10
10
13
Thanks, for your help.

ranjit
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Location: india

Hi

Post by ranjit »

This is my output.

Code: Select all

6 guess(es) required.
7 guess(es) required.
7 guess(es) required.
7 guess(es) required.
8 guess(es) required.
8 guess(es) required.
10 guess(es) required.
10 guess(es) required.
10 guess(es) required.
10 guess(es) required.
10 guess(es) required.
10 guess(es) required.
13 guess(es) required.

sohel
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Post by sohel »

In which catagorie does this problem fall into ?

Is this some sort of DP..
.. doesn't look so.

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