Compilare: user.cpp: In member function ‘void special_vector::set(int)’: user.cpp:13:23: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] buf[p>>5] |= 1<<(31 - p&31); } ^ user.cpp: In member function ‘void special_vector::push_back(int)’: user.cpp:16:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sz>>5 >= buf.size()){ ^ user.cpp: In member function ‘int special_vector::get_val(int, int)’: user.cpp:22:27: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] return (buf[dr>>5]>>(31-dr&31)) & ((2<<k) - 1); } ^ user.cpp: In member function ‘void aib_max::update(int, int)’: user.cpp:36:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( ; p < buf.size(); p += (p+1)&(-p-1)){ ^