var
	a,b,c:longint;
begin
	read(a,b,c);
        if (a+b+c) mod 2=0 then
                if (a+b)>=c then write('Yes')
                           else write('No')
                else write('Bad');
end.
/**************************************************************
	Problem: 1677
	User: admin
	Language: Pascal
	Result: Wrong Answer
****************************************************************/