fn main(){
  let xy: Vec<usize> = read_vec();
  let x = xy[0];
  let y = xy[1];

  let mut i: usize = 1;
  let mut j: usize = 0;
  let mut v: Vec<usize> = vec![0; y+1];

  while i * i <= y {
    while j * j <= y {
      let ix = i * i + j * j;
      if x <= ix && ix <= y {
        v[ix] += 4;
      }
      j += 1;
    }
    i += 1;
    j = 0;
  }

  println!("{}", v.iter().max().unwrap());
}

fn read_vec<T>() -> Vec<T>
  where T: std::str::FromStr,
        T::Err: std::fmt::Debug
{
  let mut buf = String::new();
  std::io::stdin().read_line(&mut buf).expect("failed to read");
  buf.split_whitespace().map(|e| e.parse().unwrap()).collect()
}