fn main() {
    let mut nk = String::new();
    std::io::stdin().read_line(&mut nk).ok();
    let nk: Vec<usize> = nk.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let n = nk[0];
    let k = nk[1];

    if n == 0 && k > 0 {
        println!("INF");
        return;
    }
    let ulimit = (1usize << (format!("{:b}", n).len() + 1)).max(512);
    let mut result = 0usize;
    for y in 0..ulimit {
        if y & n != n { continue; }
        let lower = if y < k { 0 } else { y - k };
        for x in lower..=y {
            if x & y == n {
                result += 1;
            }
        }
    }
    println!("{}", result);
}