program coder;
{var lib:array[1..242]of string;
    libbytes:array[1..242]of string;
    libnames:array[1..242]of string;
    ls:array[1..11]of string;
    lss:array[1..2]of string;}
begin
  var kj:array of integer;
  var ki:array of integer;
  var h := new System.IO.StreamReader('input.txt',false, System.Text.Encoding.Default);
  
  var text:string;
  var n:integer;
  
  text:=h.ReadLine;
  n:=length(text);
  
  writeln(n);
  
  {for var i:=1 to 128 do begin
   for var j;=1 to 3 do begin}


end.