const fi='';
      fo='';
var f, g: text;
    n, res: longint;
begin
    assign(f,fi); assign(g,fo);
    reset(f); rewrite(g);
    readln(f,n);
    case (n mod 4) of
      0: res:=16;
      1: res:=16;
      2: res:=15;
      3: res:=15;
      end;
    writeln(g,res);
    close(f); close(G);
end.