## Search found 28 matches

- Mon Oct 23, 2006 9:48 am
- Forum: Volume 111 (11100-11199)
- Topic: 11134 - Fabled Rooks
- Replies:
**12** - Views:
**5961**

You can do it in O(NlogN). You can solve for the columns and rows independently, as you mentioned. For assigning the rooks to different columns, here is a hint, in the form of questions :) You can ignore 1 below, if you know an O(N^2) solution aleady. 1) Let x = how many rooks can be assigned to the...

- Tue Sep 26, 2006 8:30 pm
- Forum: Volume 111 (11100-11199)
- Topic: 11100 - The Trip, 2007
- Replies:
**18** - Views:
**13931**

- Tue Jan 03, 2006 12:51 am
- Forum: Other words
- Topic: ACM regionals and finals questions..
- Replies:
**29** - Views:
**12877**

After going through misof's article, I had a thought about how judging can be done at the IOI to promote correctness ahead of heuristics. For each problem, have 3 or 4 different input files, each containing multiple test cases , each file testing a particular aspect of the solution. A solution will ...

- Wed Jun 16, 2004 12:13 pm
- Forum: Volume 106 (10600-10699)
- Topic: 10604 - Chemical Reaction
- Replies:
**24** - Views:
**14942**

Ohh wait was that WA in 4 sec. The limit is 10 tubes right? I made such mistake once with a limit of 50,and it timed out. I forgot, mixing A with B need not be same as mixing B with A. for (int y=1;y<w;y++) for (int l=0;l<w;l++) if (y>l) if ((l==0)||(p[l]!=p[l-1])) this could be changed to reflect t...

- Wed Jun 16, 2004 11:48 am
- Forum: Volume 106 (10600-10699)
- Topic: 10604 - Chemical Reaction
- Replies:
**24** - Views:
**14942**

I think this will timeout always no matter what encoding is used. If you look at it,in essence, you are trying to find the shortest path by DFS. The problem is that you are memoizing heats evolved in getting to a particular state from the start state, and redoing the calculation from this state to t...

- Wed Jun 16, 2004 11:17 am
- Forum: Volume 106 (10600-10699)
- Topic: 10604 - Chemical Reaction
- Replies:
**24** - Views:
**14942**

- Wed Jun 02, 2004 3:07 pm
- Forum: Volume 106 (10600-10699)
- Topic: 10658 - ReArrange
- Replies:
**16** - Views:
**5853**

Got it now, i missed(??!!) the case n=0(my base cases were n=1 2 and 3) n=0 doesn't really make sense even though it is not forbidden by the input.I was misled by the statement that the numbering can be 1,2,3...,n interpreting that there was atleast 1 marble. I guess the input should be challenging ...

- Wed Jun 02, 2004 2:44 pm
- Forum: Volume 106 (10600-10699)
- Topic: 10658 - ReArrange
- Replies:
**16** - Views:
**5853**

- Wed Jun 02, 2004 2:16 pm
- Forum: Volume 106 (10600-10699)
- Topic: 10658 - ReArrange
- Replies:
**16** - Views:
**5853**

I interpret this problem as follows. Given 3 towers and n disks, 1,2,3,,,n separate the odd numbered disks from the even numbered disks standard towers of hanoi rules applying. My solution for this matches for n = 15(14043) Can anybody give outputs for the following: 10 1 2 3 4 5 6 7 8 9 10 Also my ...

- Thu Apr 08, 2004 1:47 pm
- Forum: Volume 105 (10500-10599)
- Topic: 10567 - Helping Fill Bates
- Replies:
**15** - Views:
**7670**

- Wed Mar 10, 2004 3:27 pm
- Forum: Volume 100 (10000-10099)
- Topic: 10094 - Place the Guards
- Replies:
**19** - Views:
**7767**

http://online-judge.uva.es/board/viewtopic.php?t=1989&sid=27b745ed69e7ab27f183b15a1bad9239 u can look at this post. try reading some pattern. (it is not hard to find the pattern from the outputs provided by nick) i still can't find a pattern for numbers of the form 6K+2 or 6K+3 ( 8,9 ,14,15 ..). Fo...

- Mon Mar 08, 2004 10:46 am
- Forum: Volume 100 (10000-10099)
- Topic: 10094 - Place the Guards
- Replies:
**19** - Views:
**7767**

I solved this problem by taking 2 cases. 1) N is *NOT* of the form 6K+2 or 6k+3 this case, i print the soln. directly. 2)N is of the form 6K+2 or 6K+3 For this case i ran a minimum conflicts local search and got AC in 5 sec. I am convinced that there is some general pattern for the case n = 6K+2 or ...

- Mon Mar 08, 2004 10:45 am
- Forum: Volume 100 (10000-10099)
- Topic: 10094 - Place the Guards
- Replies:
**19** - Views:
**7767**

- Fri Jan 30, 2004 11:57 am
- Forum: Volume 106 (10600-10699)
- Topic: 10617 - Again Palindrome
- Replies:
**12** - Views:
**5896**

Count the number of palindromes that can be made out of subsets of the characters of the given string, maintaining the order(no permutations allowed). (same characters at different positions are considered different). For every palindrome u find in the above way, there is a unique way of scoring out...

- Mon Jan 26, 2004 5:21 am
- Forum: Volume 106 (10600-10699)
- Topic: 10616 - Divisible Group Sums
- Replies:
**39** - Views:
**19068**