import java.util.Scanner;
public class No98 {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		double xp = s.nextDouble() , yp = s.nextDouble();
		s.close();

		xp = 2 * Math.sqrt(xp*xp + yp*yp);
		int r;
		if(xp == (int)xp){
			r = (int)xp + 1;
		}else{
			r = (int)Math.ceil(xp);
		}
		System.out.println(r);
	}

}