import java.util.Scanner;
class N098{
	public static void main(String args[]){
		Scanner s = new Scanner(System.in);
		int x = s.nextInt();
		int y = s.nextInt();
		double a = Math.pow(x, 2) + Math.pow(y, 2);
		for(int i = 0; true; i++){
			if(Math.pow(i / 2d, 2) > a){
				System.out.println(i);
				break;
			}
		}
	}
}