## Search found 119 matches

- Sun Feb 22, 2009 1:39 am
- Forum: Algorithms
- Topic: minimize sum of manhattan distance
- Replies:
**2** - Views:
**3208**

### minimize sum of manhattan distance

The 1D problem is well known. Choose the median. But how do we choose in a 2D space. If choosing one of the given points wasn't a constraint , then i could choose the median of all x and median of all y (Mx,My). But that needn't be a point of the given set. There are around 100 testcases. So looking...

- Sun Feb 22, 2009 1:23 am
- Forum: Algorithms
- Topic: Non-Text Book Algorithms
- Replies:
**2** - Views:
**3238**

### Re: Non-Text Book Algorithms

constructing segment trees. See topcoder tutorials.

All these are applications of standard algorithms. So learn and understand them well, so that you can apply then yourself. Practice helps.

All these are applications of standard algorithms. So learn and understand them well, so that you can apply then yourself. Practice helps.

- Wed Feb 18, 2009 1:59 pm
- Forum: Algorithms
- Topic: given sum and product , find the respective integers.
- Replies:
**2** - Views:
**3364**

### Re: given sum and product , find the respective integers.

i was able to get accepted using some pruning which my friend told. i 'm not able to understand this pruning why it is true. It says if the sum of k integers is S and product is P, then if S > abs(P)+k , then there cannot be any solution . Why ? what about S < -abs(P) -k ? if(S> abs(P) + N) return ;...

- Wed Feb 11, 2009 2:11 am
- Forum: Algorithms
- Topic: given sum and product , find the respective integers.
- Replies:
**2** - Views:
**3364**

### given sum and product , find the respective integers.

http://acm.pku.edu.cn/JudgeOnline/problem?id=2844 Given sum and product of N integers, find them if they exist. For a sequence of N integers A1, A2, ... , AN, we can calculate their sum S and product P easily. With given N, S and P, can you find out the sequence A1, A2, ... , AN? The input only con...

- Wed Feb 11, 2009 12:16 am
- Forum: Algorithms
- Topic: Orthogonal range searching
- Replies:
**0** - Views:
**1329**

### Orthogonal range searching

without fractional cascading. I tried posting this at http://forums.topcoder.com/?module=Thread&threadID=632764&start=0 but never got any suggestions. i've implemented range trees for 2 dimensional points. I've difficulty extending it to n dimensional points. Can you suggest a better implementation ...

- Tue Feb 10, 2009 10:47 pm
- Forum: Algorithms
- Topic: Circular String Linearization
- Replies:
**12** - Views:
**13095**

### Re: Circular String Linearization

thanks,mf wrote:Y

I wrote it for my ICPC team's reference notebook

If they are commented like above, do you have them online somewhere or can you send the rar to tryitn1@gmail.com. Would certainly be useful.

- Tue Feb 10, 2009 9:29 pm
- Forum: Algorithms
- Topic: Circular String Linearization
- Replies:
**12** - Views:
**13095**

### Re: Circular String Linearization

Can you please post it here ?And for this problem, I think, suffix arrays are the way to go in contests -- I have a very simple O(n log^2 n) implementation in only 20 lines of C++, and it needs only 16 bytes per char.

- Sat Jan 31, 2009 7:54 am
- Forum: Volume 112 (11200-11299)
- Topic: 11280 - Flying to Fredericton
- Replies:
**43** - Views:
**16655**

### Re: 11280 - Flying to Fredericton

2 4 Calgary Winnipeg Ottawa Fredericton 6 Calgary Winnipeg 125 Calgary Ottawa 800 Winnipeg Fredericton 325 Winnipeg Ottawa 200 Calgary Fredericton 875 Ottawa Fredericton 175 4 2 1 0 10 3 Calgary Montreal Fredericton 2 Calgary Montreal 300 Montreal Fredericton 325 2 0 1 Scenario #1 Total cost of fli...

- Wed Jan 28, 2009 5:01 am
- Forum: Volume 101 (10100-10199)
- Topic: 10154 - Weights and Measures
- Replies:
**60** - Views:
**40256**

### Re: 10154 - Weights and Measures

RS (residual strength) = Actualstrength (AS) - weight(W) RS = AS - W if i 've RS1 < RS2 how would i order and why ?You are odering it from bottom{maximum residual strenght at bottom} (turtle 2)RS2 < (turtle 1) RS1 because RS2 can carry more weight.lets say AS1 = 1000, W1=900, AS2=800, W2=600, now R...

- Sat Jan 03, 2009 11:35 am
- Forum: Bugs and suggestions
- Topic: Cookie problem of acm.uva.es board
- Replies:
**5** - Views:
**4585**

### Re: Cookie problem of acm.uva.es board

i use the redirector addon with regexp option currently to work around this and icpcresproblem.

Any valid sid that is generated when you login once can be used.

https://addons.mozilla.org/en-US/firefox/addon/5064

screenshot rules

Any valid sid that is generated when you login once can be used.

https://addons.mozilla.org/en-US/firefox/addon/5064

screenshot rules

- Fri Jan 02, 2009 3:22 pm
- Forum: Bugs and suggestions
- Topic: Cookie problem of acm.uva.es board
- Replies:
**5** - Views:
**4585**

### Re: Cookie problem of acm.uva.es board

what version of chrome do you use ? I use 1.0.154.36 on XP SP3. It doesn't work for me on chrome. Once i login on the board ,any subsequent stuff is good but when I close the chrome browser (taskkill /im chrome.exe /f) then restart , acm.uva.es/board it asks for login agin. It doesn't work on Opera ...

- Fri Jan 02, 2009 1:43 pm
- Forum: Bugs and suggestions
- Topic: Cookie problem of acm.uva.es board
- Replies:
**5** - Views:
**4585**

### Cookie problem of acm.uva.es board

When i click login , i 've my username and password filled. I click "Log me on automatically each visit" and login . Nexttime when i close all the browsers (firefox.exe by taskkill /im firefox.exe /f ) and then again visit the site acm.uva.es/board , it still asks for the username password. I checke...

- Thu Jan 01, 2009 10:45 pm
- Forum: Bugs and suggestions
- Topic: 930 - Polynomial Roots Tests
- Replies:
**1** - Views:
**1885**

### 930 - Polynomial Roots Tests

http://acm.uva.es/board/viewtopic.php?f=35&t=23541&hilit=930&sid=65c2740f4b37bb529606db414a767c04 Carlos, where do we submit test cases for the problem. I have some tests to be added even for other problems. Inputs Here are some test cases 8 3 1 -3 3 1 1 4 0 1 3 3 1 -1 -1 4 15 1 -52 20 16 1 -2 4 1 ...

- Thu Jan 01, 2009 9:01 pm
- Forum: Bugs and suggestions
- Topic: Ban this user for flooding and spamming
- Replies:
**4** - Views:
**2037**

### Re: Ban this user for flooding and spamming

http://acm.uva.es/board/viewtopic.php?f ... 0475cc53ee, see the last post by

feimotion337

feimotion337

- Thu Jan 01, 2009 2:33 am
- Forum: Volume 106 (10600-10699)
- Topic: 10668 - Expanding Rods
- Replies:
**38** - Views:
**20352**

### Re: 10668 - Expanding Rods

i used long double , and EPS as 1e-13

Code: Select all

```
1000 100 0.0001
15000 10 0.00006
15000 20 0.00006
15000 20 0.00089
10 1 0.001
10 0 0.001
1 5 0.2333
5 1 0.2333
5300 100 0.5323
15 415 0.0044
15 15 3.333
-1 -1 -1
```

Code: Select all

```
61.329
225.020
318.255
1228.775
0.194
0.000
0.000
1.529
0.000
0.000
0.000
```