Compilare: user.cpp: In function ‘void sterge(int, int)’: user.cpp:10:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[u].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(T.size()!=(m+1)) ^ user.cpp:60:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<T.size()-1;++i) ^