import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int y = sc.nextInt();
		int d2 = x * x + y * y;
		int left = 0;
		int right = 40000;
		while (right - left > 1) {
		    int m = (right + left) / 2;
		    if (Math.pow((double)m / 2.0, 2) > d2) {
		        right = m;
		    } else {
		        left = m;
		    }
		}
		System.out.println(right);
   }
}