program SumOddDigits;

var
num, digit, sum: integer;

begin
sum := 0;

writeln${}^{\prime }Enterapositiveinteger{:}^{\prime }$;
readln$num$;

while num > 0 do
begin
digit := num mod 10;
if digit mod 2 <> 0 then
sum := sum + digit;
num := num div 10;
end;

writeln${}^{\prime }Thesumofodddigitsis{:}^{\prime },sum$;

end.