AGGRCOW  Aggressive cows
Farmer John has built a new long barn, with N (2 <= N <= 100,000)
stalls. The stalls are located along a straight line at positions
x1,...,xN (0 <= xi <= 1,000,000,000).
His C (2 <= C <= N) cows don't like this barn layout and become
aggressive towards each other once put into a stall. To prevent the
cows from hurting each other, FJ wants to assign the cows to the
stalls, such that the minimum distance between any two of them is
as large as possible. What is the largest minimum distance?
Input
t – the number of test cases, then t test cases follows.
* Line 1: Two spaceseparated integers: N and C
* Lines 2..N+1: Line i+1 contains an integer stall location, xi
Output
For each test case output one integer: the largest minimum distance.
Example
Input:
1 5 3 1 2 8 4 9
Output:
3
Output details:
FJ can put his 3 cows in the stalls at positions 1, 4 and 8,
resulting in
a minimum distance of 3.
hide comments
Krzysztof Strojny:
20150709 20:58:31
Can someone please look at my solution? I have no clue why it's not working (edit: forgot to delete package name, silly mistake) Last edit: 20150713 22:40:21 

pbd:
20150704 20:17:00
All hail topcoder.


Shashank kumar:
20150629 15:18:48
you have to find the largest possible distance not minimum possible distance got two wrong answers for that .


Rishabh:
20150626 15:59:51
Super Concept <3 

sumit2893:
20150617 16:54:19
Here read it ..


jokysatria:
20150615 02:09:10
someone can help me? can you explain to me, what is the relation of binary search with this problem? give me the clue. thx Last edit: 20150615 02:51:38 

Maverick:
20150603 17:55:35
Great Problem.Now i Know where and why to use Binary Search. 

sharif ullah:
20150603 08:28:52
ohh! 1,4,8 ans will be 3 Last edit: 20150603 08:31:13 

[Mayank Pratap]:
20150528 17:41:32
Phew.....ACed ....


shuvadip:
20150321 18:04:38
Sorry silly mistake!!!! Last edit: 20150330 19:20:16 
Added by:  Roman Sol 
Date:  20050216 
Time limit:  2s 
Source limit:  10000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All 
Resource:  USACO February 2005 Gold Division 