/in/foo.cc: In function 'int main()':
/in/foo.cc:29:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
/in/foo.cc:57:51: warning: 'ansy' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d\n%d\n",(int)floor(ansx+0.5),(int)floor(ansy+0.5));
                                              ~~~~~^~~~~~~~~~
/in/foo.cc:57:30: warning: 'ansx' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d\n%d\n",(int)floor(ansx+0.5),(int)floor(ansy+0.5));
                         ~~~~~^~~~~~~~~~