import java.math.*;
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();
        for(int i=1;;i++){
        	if(i*1.0/2>Math.sqrt(x*x*1.0+y*y*1.0)){
        		System.out.println(i);
        		return;
        	}
        }
    }
}