Compilare: user.cpp: In function ‘std::vector<point, std::allocator<point> > insq(std::vector<point, std::allocator<point> >, int, int, int)’: user.cpp:22: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘std::pair<point, point> bs(std::vector<point, std::allocator<point> >)’: user.cpp:32: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void read()’: user.cpp:98: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:102: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result