Const n=5; var a:array[1..n,1..n] of integer; i,j,d,k,l,m:integer; begin k:=1; i:=1; j:=1; a[i,j]:=1; d:=n-1; for l:=1 to d do begin k:=k+1; j:=j+1; a[i,j]:=k; end; for m:=1 to n div 2 do begin for l:=1 to d do begin k:=k+1; i:=i+1; a[i,j]:=k; end; for l:=1 to d do begin k:=k+1; j:=j-1; a[i,j]:=k; end; d:=d-1; for l:=1 to d do begin k:=k+1; i:=i-1; a[i,j]:=k; end; for l:=1 to d do begin k:=k+1; j:=j+1; a[i,j]:=k; end; d:=d-1; end; for i:=1 to n do begin for j:=1 to n do write(a[i,j]:4); writeln; end; end.
