import java.util.*;
public class draw{
	public static void main(String... args){
		Scanner scan = new Scanner(System.in);
		int x = scan.nextInt(),y = scan.nextInt();
		int xx = x*x,yy = y*y;
		double r;
		r = Math.sqrt(xx+yy);
		if(r%10!=0){
			System.out.println(Math.ceil(r));
			return;
		}else{
			System.out.println(r);
			return;
		}
	}
}