Function ToBinaryString(x: integer): string;
var r, s: string;
begin
if x < 0 then begin
s := '-';
x := -x;
end;
while x <> 0 do begin
r := Chr((x and 1) or 48) + r;
x := x shr 1;
end;
ToBinaryString := s + r;
end;
var x: integer;
begin
readln(x);
writeln(ToBinaryString(x));
<span>end.</span>
Var i,k:integer;
rez:real;
begin
for i:=10 to 99 do
if (i mod 2)=0 then
begin
k:=k+1;
rez:=rez+i;
end;
rez:=rez/k;
writeln(rez:0:1);
<span>end.</span>