Compilare: user.cpp: In constructor ‘point::point(int, int, int)’: user.cpp:9: warning: ‘point::poz’ will be initialized after user.cpp:9: warning: ‘int point::x’ user.cpp:10: warning: when initialized here user.cpp: In function ‘void build(int, int, int, std::vector<int, std::allocator<int> >&, __gnu_cxx::__normal_iterator<point*, std::vector<point, std::allocator<point> > >&)’: user.cpp:77: warning: comparison between signed and unsigned integer expressions user.cpp:77: warning: comparison between signed and unsigned integer expressions user.cpp:93: warning: comparison between signed and unsigned integer expressions user.cpp:99: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘bool query(int, int)’: user.cpp:130: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:181: warning: comparison between signed and unsigned integer expressions user.cpp:189: warning: comparison between signed and unsigned integer expressions user.cpp:154: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:155: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:158: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:165: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:168: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In member function ‘bool compare::operator()(const point&, const point&) const’: user.cpp:35: warning: control reaches end of non-void function