Compilare: user.cpp: In function ‘void buildAINT(int, int, int)’: user.cpp:67:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < AINT[lv * 2].size() && j < AINT[lv * 2 + 1].size()) ^ user.cpp:67:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < AINT[lv * 2].size() && j < AINT[lv * 2 + 1].size()) ^ user.cpp:81:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; i < AINT[lv * 2].size(); ++i) ^ user.cpp:86:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; j < AINT[lv * 2 + 1].size(); ++j) ^ user.cpp: In function ‘int query(int, int, int, int, std::pair<int, int>, int)’: user.cpp:110:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (l >= AINT[lv*2].size() || AINT[2 * lv][l].val > AINT[lv][inter.first].val) ^ user.cpp:122:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r >= AINT[lv*2+1].size() || AINT[2 * lv + 1][r].val > AINT[lv][inter.second].val) ^