/in/foo.cc: In member function 'bool point::operator<(const point&) const':
/in/foo.cc:19:14: warning: statement has no effect [-Wunused-value]
         a.am > am;
         ~~~~~^~~~
/in/foo.cc:20:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:71:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=1;i<=a.size()-K;i++)
             ~^~~~~~~~~~~~
/in/foo.cc:73:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=1;i<=b.size()-L;i++)
             ~^~~~~~~~~~~~
/in/foo.cc:32:11: warning: unused variable 'ii' [-Wunused-variable]
     int i,ii;
           ^~