import java.io.*;
import java.util.*;

public class Main_yukicoder781 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int x = sc.nextInt();
		int y = sc.nextInt();

		
		List<Integer> xx = new ArrayList<>();
		for (int i = 0; i * i <= y; i++) {
			xx.add(i * i);
		}

		int[] cnt = new int[y + 1];
		for (int i = 0; i * i < y; i++) {
			int ii = i * i;
			for (int e : xx) {
				if (ii + e > y) {
					break;
				}
				cnt[ii + e]++;
			}
		}
		
		int max = 0;
		for (int i = x; i <= y; i++) {
			max = Math.max(max, cnt[i]);
		}
		
		pr.println(max * 4);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);
			
		solve();
			
		pr.close();
		sc.close();
	}

	static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
}