Const
 M0=4;
 N0=5;
VAR
 A1,A2:ARRAY[1..M0,1..N0] of BYTE;
 B1,B2:ARRAY[1..M0*N0] of BYTE;
 n:WORD;
 i,j,k:Integer;
 C:Char;
BEGIN
 RANDOMIZE;

 For i:=1 to M0 do
  For j:=1 to N0 do
   A1[i,j]:=Random(100);

 Writeln('Initial matrix:');
 For i:=1 to M0 do
  begin
   For j:=1 to N0 do
    Write(A1[i,j]:4);
   WriteLn;
  end;

 WriteLn;

 WriteLn('Enter the regime - Right (R) or Down (D):');
 ReadLn(C);

 Write('Enter the Shift ');
 ReadLn(n);

 If (C='R') or (C='r') then
  begin
   For i:=1 to M0 do
    For j:=1 to N0 do
     B1[(i-1)*N0+j]:=A1[i,j];
  end else
  begin
   For j:=1 to N0 do
    For i:=1 to M0 do
     B1[(j-1)*M0+i]:=A1[i,j];
  end;

  For i:=1 to M0*N0 do
   begin
    If (i+n)<=M0*N0 then k:=(i+n) else
    If ((i+n) mod (M0*N0))=0 then k:=M0*N0 else     
    k:=((i+n) mod (M0*N0));
    B2[k]:=B1[i];
   end;

 If (C='R') or (C='r') then
  begin
   For i:=1 to M0 do
    For j:=1 to N0 do
     A2[i,j]:=B2[(i-1)*N0+j];
  end else
  begin
   For j:=1 to N0 do
    For i:=1 to M0 do
     A2[i,j]:=B2[(j-1)*M0+i];
  end;

  WriteLn;

  WriteLn('"Shifted" matrix:');
  For i:=1 to M0 do
   begin
    For j:=1 to N0 do
     Write(A2[i,j]:4);
    WriteLn;
   end;

 ReadLn;

END.