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 k == n * (n+1) / 2 {
        println!("0");
        return;
    } if k == 0 {
        println!("1");
        return;
    }
    let k = n * (n+1) / 2 - k;
    let a = (1..=n).collect::<Vec<_>>();
    let mut idx = 0usize;
    let mut summary = 0usize;
    for i in 0..n {
        summary += a[i];
        while summary > k {
            summary -= a[idx];
            idx += 1;
        }
        if k == summary {
            println!("1");
            return;
        }
    }
    println!("2");
}