Reading entry from 0x1e87290 ... 
5 entries stored in matrix at 0x1e874d0.

matrix at 0x1e874d0 ...
    1 (2,2)     8 (2,4)     7 (1,3)     5 (2,3)     6 (1,5) 

Reading entry from 0x1e87290 ... 
5 entries stored in matrix at 0x1e87680.

matrix at 0x1e87680 ...
   -8 (2,4)     6 (1,5)    -1 (2,2)     6 (2,3)    -7 (1,3) 

search 7 in matrix at 0x1e874d0 ...
1 3

find max in matrix at 0x1e874d0 ...
maximum 8 at position (2, 4)

Adding 0x1e874d0 to 0x1e87010 ...

matrix at 0x1e872b0 ...
    1 (2,2)     8 (2,4)     7 (1,3)     5 (2,3)     6 (1,5) 

search 7 in matrix at 0x1e87680 ...

find max in matrix at 0x1e87680 ...
maximum 6 at position (1, 5)

Adding 0x1e87680 to 0x1e872b0 ...

matrix at 0x1e87460 has 2 non-zero entries.

matrix at 0x1e87460 ...
   11 (2,3)    12 (1,5)