Var
  a, b: array[1..110000] of integer;
  i, n, j, cnt: integer;
begin

  Readln(n);
  for i := 1 to n do
    Read(a[i]);
  Write(a[1], ' ');
  for i := 2 to n - 1 do
  Begin
  if a[i] > 0 then Write(a[i], ' ');
 i if (a[i] 0) and (cnt = 0) then      for j := i to n do      begin      if (j = n) and (a[j] < 0) then
 begin
   cnt:= 0;
   break;
end;
        if a[j] > 0 then 
          break
        else 
          cnt:= cnt + 1;
       end;
  if cnt = 0 then Write(a[i], ' ');    if cnt > 0 then cnt := cnt - 1;  
  end;
  Write(a[n]);  end.