Compilare: user.cpp: In function ‘int main()’: user.cpp:117:25: warning: variable ‘nod3’ set but not used [-Wunused-but-set-variable] lista nod1,nod2,nod3; ^ user.cpp:142:14: warning: unused variable ‘ok’ [-Wunused-variable] bool ok=backtrack(nod2,k,nod2.i); ^ user.cpp:113:24: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<cmin-1; ^ user.cpp:113:15: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<cmin-1; ^