#include "Stdio.h"
main()
{
  int ix,iy;
  printf("please input a point coordinates :");//coordinates是坐标 
  scanf("%d%d",&ix,&iy );
  if(ix*ix+iy*iy<16)
     printf("点在圆里\n" );
     
  else if(ix*ix+iy*iy>16)
     printf("点在圆外\n");
  else
     printf("点在圆上\n");
}