program vanopan;
uses crt;
var
  a: array[1..1000] of longint;
  l, r, i, mid, n, schet, x: longint;

begin
  readln(n);
  l := 1;
  r := n + 1;
  schet := 1;
  while (r - l) > 1 do
    begin
      mid := (l + r) div 2;
      if x > mid then
        l := mid
      else
        r := mid;
      if l = mid then
        schet := schet + 1;
      if r = mid then
        schet := schet + 1;
    end;
  writeln(schet);
end.