program fibonee;

var
  hlp: integer;

function fibo(i: integer): integer;

var hlp1, hlp2: integer;

begin
  writeinteger(i);
  if (i <= 1) then
  begin
    { writeinteger(-1); }
    fibo := 1
  end
  else
  begin
    hlp1 := fibo(i-1);
    hlp2 := fibo(i-2);
    { writeinteger(-(hlp1+hlp2)); }   
    fibo := hlp1 + hlp2
  end
end;


begin
  hlp := fibo(12);
  writeinteger(hlp)
end.