#include<math.h>
#include<unistd.h>
#include<stdlib.h>
#define F(Y,Z)for(Y=0;Y<Z;Y++)
#define R rand()/(RAND_MAX+1.)
unsigned char A[76800],B[32][32],C[256][256],D[256][256],*p,*t;int E[2364][2],
i,j,k,z,X,Y,d,g,a,b;double l,x,y,m;int main(void){F(i,32)F(j,32){k=(14-sqrt((
16-i)*(16-i)+(16-j)*(16-j)))*255/14;if(k>0)B[i][j]=k;}F(i,256)F(j,256)C[i][j]=
i*j/255,D[i][j]=i+j>255?255:i+j;F(i,100){x=i/99.*319;l=x-160;l*=l;F(j,100){y=j
/99.*239;m=y-120;m*=m;if(l+m<2924){E[z][0]=E[z+1182][0]=x;E[z++][1]=E[z+1182][
1]=y;}}}F(l,250){F(i,76800)A[i]=0;x=l*1.68-50;y=290-l*1.36;g=R*z;a=R*10-5;b=R*
10-5;F(k,z){X=E[k+g][0]-x;Y=E[k+g][1]-y;d=X*X+Y*Y-2209;if(d>0){d=sqrt(d);if(d>
255)d=255;p=&B[0][0];if(d>19){t=A+E[k+g][0]+a-16+(E[k+g][1]+b-16)*320;if(t[
5136]<81){F(i,32){F(j,32)*t=D[*t][C[d][*p]],p++,t++;t+=288;}}}}}write(1,A,
76800);}}

/*
  gcc a.c -lm
  ./a.out > A
  ffmpeg -f rawvideo -s 320x240 -r 25 -pix_fmt gray -i A eclipse.mp4
  ffplay eclipse.mp4
*/