3 4
2.0   1.0  -1.0   8.0  
-3.0  -1.0   2.0  -11.0 
-2.0   1.0   2.0  -3.0 

3 3
2 -7 4 
1 9 -6 
-3 8 5 

3 4
2 -7 4 9
1 9 -6 1
3  2 -2 10

(la terza riga e' la somma delle prime 2).



*************************************************

3 6
2 -7 4 1 0 0
1 9 -6 0 1 0
-3 8 5 0 0 1


3 4
2 -7 4 9
1 9 -6 1
-3 8 5 6
 






4
1 1 1 1 4
1 1 1 -3 0
1 1 -2 0 0
1 2 3 -6 0




