/in/foo.cc: In function 'int main()':
/in/foo.cc:115:33: warning: format '%d' expects argument of type 'int', but argument 2 has type 'LL {aka long long int}' [-Wformat=]
   printf("%d %d\n",a[i].x,a[i].y);
                                 ^
/in/foo.cc:115:33: warning: format '%d' expects argument of type 'int', but argument 3 has type 'LL {aka long long int}' [-Wformat=]
/in/foo.cc: In function 'int cmp(int, node)':
/in/foo.cc:32:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^