Compilare: user.cpp: In function ‘void sterge(int, int)’: user.cpp:15:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Muchie[u].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:40:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<V.size();i+=2) ^ user.cpp:75:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<T.size();i+=2) ^ user.cpp:72:11: warning: unused variable ‘q’ [-Wunused-variable] bool q=1; ^