Compilare: user.cpp: In function ‘int cbmin(int, int)’: user.cpp:38:9: warning: unused variable ‘st’ [-Wunused-variable] int st = 1, dr = min(n-x+1,m-y+1), mij, O; ^ user.cpp:38:40: warning: unused variable ‘mij’ [-Wunused-variable] int st = 1, dr = min(n-x+1,m-y+1), mij, O; ^ user.cpp:38:45: warning: unused variable ‘O’ [-Wunused-variable] int st = 1, dr = min(n-x+1,m-y+1), mij, O; ^ user.cpp: In function ‘int cbmax(int, int)’: user.cpp:56:32: warning: unused variable ‘mij’ [-Wunused-variable] int dr = min(n-x+1,m-y+1), mij, z; ^