CNTTREE  Trees Again
Given a tree, you need to count how many subtrees with diameter <= K exist.
Input
The first line contains the number of test cases T. T test cases follow. For each test case, the first line contains N and K. The following N  1 lines contain two integers ai and bi, indicating an edge between nodes ai and bi in the tree. There is a blank line after each test case.
Output
Output T lines, one corresponding to each test case, containing the required answer.
Example
Sample Input: 2 3 1 0 1 1 2 6 3 0 1 1 2 2 3 2 4 3 5 Sample Output: 5 23
Constraints
1 <= T <= 100
2 <= N <= 60
0 <= ai, bi < N
1 <= K <= N  1
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Sumit Vohra:
20160214 16:30:11
well ! Its a DPTree question copied from Codechef " https://www.codechef.com/problems/TREES/ "


xuhd:
20151127 04:28:15
can you enumerate all the FIVE subtrees for the first test case?


LeppyR64:
20100928 07:06:29
For those who have difficulty, make sure you have the definition of subtree correct:

Added by:  Varun Jalan 
Date:  20100912 
Time limit:  0.300s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: NODEJS OBJC VB.NET 
Resource:  own problem 