Compilare: user.cpp: In function ‘int main()’: user.cpp:9:14: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] int k=-1,n,cate=0,i,rasp=0,max=0,ultim; ^ user.cpp:9:25: warning: unused variable ‘rasp’ [-Wunused-variable] int k=-1,n,cate=0,i,rasp=0,max=0,ultim; ^ user.cpp:46:20: warning: ‘ultim’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(prev[v[k]]>0){ ^