#include<GL/glut.h>
#define v glVertex2d
#define r(w,x,y,z) v(w,x);v(w,z);v(y,z);v(y,x);
void d(){glScaled(1/16.0f,1/16.0f,1);
glBegin(GL_QUADS);
glColor3f(1,0,0);
r(-16,-16,16,16)glColor3f(1,1,1);
r(-3,-10,3,10)r(-10,-3,10,3)glEnd();
glFlush();}
int main(int c,char**a){glutInit(&c,a);
glutInitWindowSize(320,320);
glutCreateWindow("");
glutDisplayFunc(d);
glutMainLoop();
return 0;}