Compilare: user.cpp: In function ‘bool caut(int)’: user.cpp:14:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<H[r].size();i++) ^ user.cpp:13:9: warning: unused variable ‘i’ [-Wunused-variable] int i,nr=0; ^ user.cpp: In function ‘void sterg(int)’: user.cpp:34:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<H[r].size();i++) ^ user.cpp: In function ‘void df(int, int)’: user.cpp:53:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ^ user.cpp:49:9: warning: unused variable ‘i’ [-Wunused-variable] int i,nr; ^ user.cpp:49:11: warning: unused variable ‘nr’ [-Wunused-variable] int i,nr; ^