Compilare: main.cpp: In function 'int main()': main.cpp:16:11: warning: unused variable 'm' [-Wunused-variable] { int n,m,i,j,xmax=0,ymax=0,val,nr=0,px,py,le,ri,up,down; ^ main.cpp:79:59: warning: 'py' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<v[down].cul<<" "<<v[up].cul<<" "<<py<<'\n'; ^~~~ main.cpp:56:59: warning: 'px' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<v[down].cul<<" "<<v[up].cul<<" "<<px<<'\n'; ^~~~