Compilare: user.cpp: In function ‘int main()’: user.cpp:7:44: warning: unused variable ‘x’ [-Wunused-variable] {int n,m,v[1024][1024],a[1024],b[1024],i,j,x,y,max,maxl,maxg; ^ user.cpp:7:46: warning: unused variable ‘y’ [-Wunused-variable] {int n,m,v[1024][1024],a[1024],b[1024],i,j,x,y,max,maxl,maxg; ^ user.cpp:29:8: warning: ‘maxg’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<maxg; ^