#include <stdio.h>
int main()
{
	int n,m;
	scanf("%d %d", &n,&m);
	int i = 0;
	int num = 0;
	int arr1[32] = { 0 };
	int arr2 [32] = { 0 };
	for (i = 0; i < 32; i++)
	{
		num = 1 & (n >> i);
		arr1[i] = num;
		//printf("%d ", num);
	}
	int j = 0;
	int num1 = 0;
	for (j = 0; j < 32; j++)
	{
		num1 = 1 & (m >> j);
		arr2[j] = num1;
		//printf("%d ", num1);
	}
	int count = 0;
	j = 0;
	for (i = 0; i < 32; i++)
	{
		while (j < 32)
		{
			if (arr1[i] != arr2[j])
			{
				count++;
			}
			j++;
			break;
		}
	}
	printf("%d", count);
	return 0;
}