import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		sc.close();

		if (n < k) {
			System.out.println("INF");
			return;
		}

		Set<Integer> set = new HashSet<Integer>();
		for (int i = n; i <= n + k; i++) {
			if ((n & i) == n) {
				set.add(i);
			}
		}

		int ans = 0;
		Integer[] array = set.toArray(new Integer[0]);
		for (int i = 0; i < array.length; i++) {
			for (int j = i; j < array.length; j++) {
				if ((array[i] & array[j]) == n) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
}