Compilare: user.cpp: In function ‘void update(std::vector<int>&, int, const int&)’: user.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; pos < aib.size(); pos+= lsb(pos)) ^ user.cpp: In function ‘void build(int, int, int)’: user.cpp:31:14: warning: unused variable ‘p’ [-Wunused-variable] for (int p = 0, i = st; i <= dr; ++i) if (pb[a[i]]) ^ user.cpp: In function ‘void update(int, int, int)’: user.cpp:47:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos + msk < pom[nod].vals.size() && pom[nod].vals[pos + msk] <= qy) ^ user.cpp: In function ‘int query(int, int, int)’: user.cpp:64:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos + msk < pom[nod].vals.size() && pom[nod].vals[pos + msk] <= qy) ^