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#include <GL/glut.h>
static void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT );
    glFlush();
}
void keyboard(unsigned char key,int x,int y )
{
    exit(0);
}
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutCreateWindow("hapes");
    glutFullScreen();
    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
}
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