#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> l_l;
typedef pair<int, int> i_i;

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
//const ll mod = 1000000007;

int main() {
    //cout.precision(10);
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N, K;
    cin >> N >> K;
    ll ans = 0;
    int val = 1;
    for(int i = 1; i <= 20; i++) {
        if(K >= val && val > N) {
            cout << "INF" << endl;
            return 0;
        }
        val *= 2;
    }
    for(int y = 0; y <= 5000000; y++) {
        for(int k = 0; k <= K; k++) {
            int x = y - k;
            if(x < 0) continue;
            if((x&y) == N) {
                ans++;
            }
        }
    }
    cout << ans << endl;
    return 0;
}