Compilare: user.cpp: In function ‘int exista_muchie(int, int, int&)’: user.cpp:30:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[a].size();i++) ^ user.cpp: In function ‘void hamiltonian(int, int, int)’: user.cpp:54:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘bool validare()’: user.cpp:72:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i].size()<n/2)return false; ^