var
a, i, NegativeSum, EvenCount : integer;
begin
EvenCount := 0;
NegativeSum := 0;
for i := 1 to 10 do
read (a);
if not Odd(a) then
inc(EvenCount);
if (a < 0) then
NegativeSum := NegativeSum + a;
end;
Write(EvenCount - NegativeSum)
end.