program bly(input,output);
var
  data:array[1..1000] of real;
  f:array[1..1000,1..1000] of real;
  i,j:integer;
  ans,ans0,max:real;
  x0,y0,n,x,m,y:integer;
  f1,f2:text;
begin
  assign(f1,'stock.in');
  reset(f1);
  readln(f1,n);
  for i:=1 to n do read(f1,data[i]);
  readln(f1,m);
  close(f1);
 
  for i:=1 to n-1 do begin
    for j:=i+1 to n do begin
      inc(y);
      f[i,j]:=data[j]-data[i];
      if f[i,j]>0 then inc(x);
      if f[i,j]>max then begin
        x0:=i;
        y0:=j;
        max:=f[i,j];
      end;
    end;
  end;
 
  assign(f2,'stock.out');
  rewrite(f2);
  ans:=(m/data[x0])*(data[y0]-data[x0]);
  ans0:=x/y;
  writeln(f2,ans:0:3);
  writeln(f2,ans0:0:3);
  close(f2);
end.