program stock;
var
  a:array[0..1001]of real;
  i,j,n,m,lo,wi,k:longint;
  p,max:real;
begin
  assign(input,'stock.in');
  assign(output,'stock.out');
  reset(input); rewrite(output);
  readln(n);
  fillchar(a,sizeof(a),0);
  lo:=0; wi:=0; max:=0;
  for i:=1 to n do read(a[i]);
  readln;
  readln(m);
  for i:=1 to n-1 do begin
    for j:=i+1 to n do begin
      inc(lo);
      if a[j]>a[i] then begin
         inc(wi);
         k:=trunc(m/a[i]);
         if k<1 then dec(wi)
         else if k*(a[j]-a[i])>max then max:=k*(a[j]-a[i]);
      end;
    end;
  end;
  writeln(max:0:3);
  p:=wi/lo;
  writeln(p:0:3);
  close(input); close(output);
end.