type
  arrayType = array[1..n] of integer;
  array2D = array[1..n] of arrayType;

var
  arr : array2D;
  i, j : integer;

begin
  for i := 1 to n do for j := 1 to n do readln(arr[i][j]);

  for j := 1 to n do for i := 1 to n do
  begin
   if (i > n - j + 1) then
    arr[i][j] := 0
   else
     arr[i][j] *= 2;
  end;


  for i := 1 to n do for j := 1 to n do writeln(arr[i][j]);

end.