import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int X = sc.nextInt();
		int Y = sc.nextInt();
		int[] cnt = new int[10000001];
		for(int x = 0; x * x <= Y; x++) {
			for(int y = 1; y * y <= Y; y++) {
				int k = x * x + y * y;
				if(k >= X && k <= Y) {
					cnt[k]++;
				}
			}
		}
		int ans = 0;
		for(int i = X; i <= Y; i++) {
			ans = Math.max(cnt[i], ans);
		}
		System.out.println(ans * 4);
	}
}