#include <bits/stdc++.h>

using namespace std;

int main(int argc, char *argv[]) {
    int N, K;
    cin >> N >> K;

    int x = N;
    if (N == 0) {
        if (K == 0) {
            cout << 1 << endl;
        } else {
            cout << "INF" << endl;
        }
    } else {
        int num = 0;
        vector<int> arr;
        for (int y = x; y - x <= K; y++) {
            if (y & x == N) {
                arr.push_back(y);
            }
        }
        for (int j = 0; j < arr.size(); j++) {
            for (int k = j; k < arr.size(); k++) {
                if ((arr[j] & arr[k]) == N) {
                    num++;
                }
            }
        }
        cout << num << endl;
    }
	return 0;
}