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:97:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.second == AINT[lv].size() && inter.first == AINT[lv].size()) ^ user.cpp:97:71: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.second == AINT[lv].size() && inter.first == AINT[lv].size()) ^ user.cpp:114:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.first != AINT[lv].size()) ^ user.cpp:123:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.second != AINT[lv].size()) ^ user.cpp:138:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.first != AINT[lv].size()) ^ user.cpp:147:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (inter.second != AINT[lv].size()) ^