import java.util.Scanner;

public class Yukicoder98 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		double x = sc.nextDouble(), y = sc.nextDouble();
		int res;
		for (res = 1; res <= 20001; res++) {
			if (x * x + y * y < (res/2.0) * (res/2.0)) break;
		}
		System.out.println(res);
	}
}