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

    let mut result = vec![0usize; y+1];
    for i in 0.. {
        let val = i * i;
        if val > y { break; }
        for j in 0.. {
            if i == 0 && j == 0 { continue; }
            let val2 = j * j;
            let idx = val + val2;
            if idx > y { break; }
            if val == 0 || val2 == 0 {
                result[idx] += 2;
            } else {
                result[idx] += 4;
            }
        }
    }
    println!("{}", (x..=y).map(|i| result[i]).max().unwrap());
}