main(argc,argv) int argc; char *argv[];
{
int size,is,js,isize,jsize,ist,ksize,lsize,i,j,jj;
char picin[2048],picout[2048];
if(argc<5){printf("argc error");exit(0);}
size=atoi(argv[1]);
is=atoi(argv[2]);
js=atoi(argv[3]);
isize=atoi(argv[4]);
if(argc>5) jsize=atoi(argv[5]);
else jsize=isize;
if(argc==8) {ksize=atoi(argv[6]);lsize=atoi(argv[7]);}
else {ksize=isize; lsize=jsize;}
ist = is*size;
lseek(0,ist,0);
for(i=0;i<1024;i++) picout[i]=0;
for(i=0;i<isize;i++)
{
	read(0,picin,size);
	for(j=0;j<jsize;j++)
	{
		jj=j+js;
		picout[j]=picin[jj];
	}
	write(1,picout,lsize);
}
for(j=0;j<1024;j++) picout[j]=0;
for(i=isize;i<ksize;i++) write(1,picout,lsize);
}