_08_CountOfEqualBitPairs

package Homework2;
import java.util.*;

public class CountOfEqualBitPairs {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int count = 0;

        while ((num >> 1) != 0) {
            if (((num & 1) == 1) && ((num >> 1) & 1) == 1) {
                count++;
            }
            else if (((num & 1) == 0) && ((num >> 1) & 1) == 0) {
                count++;
            }
            num >>= 1;
        }
        System.out.println(count);

    }

}