CONHONPR  Contest Hall Preparation
Before the ACMACPC regional contest, the site director and the volunteers were very busy preparing for the contest. One of their tasks is to assign a table for each team such that no two teams from the same university are adjacent to each other. The site director decided not to waste his time doing this task and asked the judges to do it. The judges thought this could be a good problem to be used in the contest problems set. As they were very busy preparing for the contest, the judges decided to solve part of the problem and ask the contestants to solve the rest.
The judges will generate a number of layouts for the teams assignment to the tables and will ask the contestants to write a program to check whether each of these layouts is valid or not. If a layout is not valid the program should count how many different universities have at least two of their teams sitting adjacent to each other. "Well, you may use those solutions for the next year's contest", said by the chief judge Ahmed Aly to the site director.
The contest hall can be represented as a 2D grid of N rows with M cells in each row. Each cell in the grid is either occupied by a team or empty. There could be up to 8 teams adjacent to a single team. A team may have less than 8 adjacent teams if it is seated next to a hall edge or some of its adjacent cells are empty.
For example, in the layout shown in the following figure, team E has 7 adjacent teams, named A, B, C, D, F, G and H, while the adjacent teams to team A are B, D and E.
Input
Your program will be tested on one or more test cases. The first line of the input will be a single integer T, the number of test cases (1 ≤ T ≤ 100). Followed by the test cases, each one starts with a line containing 2 integers separated by a single space N and M (1 ≤ N, M ≤ 100) representing the dimensions of the hall, followed by N lines each line contains M integers separated by a single space, representing the tables assignment in this row. Each integer represents the university ID of the team assigned to this table or '1' if it is empty. All universities IDs are positive integers not greater than 100.
Output
For each test case, print on a single line integer, the number of different universities having at least two of their teams adjacent to each other.
Example
Sample Input 3 3 3 1 2 3 2 2 2 1 1 1 3 3 1 2 3 3 1 1 2 1 2 3 3 1 2 3 1 1 5 1 2 4 Sample Output 2 0 1
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vengatesh15:
20170424 22:26:29
easy one :) 

Piyush Kumar:
20160715 12:34:07
The image is missing. :(


dwij28:
20160324 05:58:02
Hint for people having a tough time with matrix bounds. Take matrix of size (n+2)*(m+2) .. No if statements shit, everyone has 8 neighbours now .. ;) 

samfisher:
20131123 01:03:46
IS 0 also a university code ? 

BLANKRK:
20130720 18:07:09
yupp!!!eazy one... :D 

Himanshu:
20130622 09:15:00
finally AC :)


STARK:
20130216 14:06:57
can 0 also be in input for university ids?? 

STARK:
20130216 14:04:01
solution id8723289


Kevin Sebastian:
20130125 11:44:43
@Tjandra,@author pls post tricky test cases 

c[R]@zY f[R]0G:
20130119 10:56:55
any tricky test case

Added by:  Kawmia Institutes 
Date:  20130118 
Time limit:  0.384s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 
Resource:  ACM ICPC 2012 