Compilare: user.cpp: In member function ‘void aib::size(int)’: user.cpp:18:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ai.size() <= x) ^ user.cpp: In member function ‘void aib::update(int, int)’: user.cpp:34:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pos < ai.size()){ ^ user.cpp: In member function ‘int aint::count(int)’: user.cpp:105:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); ++i) ^ user.cpp: In member function ‘void aint::make(int)’: user.cpp:156:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(lp < t[t[x].lt].nums.size() && rp < t[t[x].rt].nums.size()){ ^ user.cpp:156:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(lp < t[t[x].lt].nums.size() && rp < t[t[x].rt].nums.size()){ ^ user.cpp:167:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(lp < t[t[x].lt].nums.size()){ ^ user.cpp:172:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(rp < t[t[x].rt].nums.size()){ ^