Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String aBin = Integer.toBinaryString(a);
        String bBin = Integer.toBinaryString(b);
        int count = 0;
        for(int i = 0; i<aBin.length(); i++){
            for(int j = 0; j<bBin.length(); j++){
                if((aBin.charAt(i) ^ bBin.charAt(j)) == 0){
                    count++;
                }
            }
        }

        System.out.println(count);