Составьте программу рисования прямоугольной рамки вдоль края поля при любом начальном состоянии

var n,z: longint;

begin

  read(n);

  z: =abs(n);

  z: =z-2;

  writeln(z);

end.

uses graphabc,crt; const t=500;

beginsetwindowsize (600, 600); setpencolor (clblack); setbrushcolor (clblack); rectangle (45, 45, 105, 225 ); setpencolor (clred); setbrushcolor (clred); circle (75, 75, 25); setpencolor (clyellow); setbrushcolor (clyellow); circle (75, 130, 25); setpencolor (clgreen); setbrushcolor (clgreen); circle (75, 185, 25); setpencolor (clblack); setbrushcolor (clblack); rectangle (70, 225, 80, 300); setbrushcolor (cldkgray); circle (75, 130, 25); setbrushcolor (clgreen); circle (75, 185, 25);

repeatsetbrushcolor (cldkgray); circle (75, 185, 25); setbrushcolor (clred); circle (75, 75, 25); delay(t); setbrushcolor (cldkgray); circle (75, 75, 25); setbrushcolor (clyellow); circle (75, 130, 25); delay(t); setbrushcolor (cldkgray); circle (75, 130, 25); setbrushcolor (clgreen); circle (75, 185, 25); delay(t); until keypressed;

end.