import java.util.Arrays;
import java.util.Scanner;

public class Main implements Runnable {
    public static void main(String[] args) {
        new Thread(null, new Main(), "", 512 * 1024 * 1024).start();
    }

    public void run() {
    	Scanner sc=new Scanner(System.in);
    	long x=sc.nextLong();
    	long y=sc.nextLong();
    	if(x==0&&y==0) {
    		System.out.println(0);
    	} else if(x==y){
    		System.out.println(1);
    	} else if(-x==y) {
    		System.out.println(1);
    	} else if(x==0||y==0) {
    		System.out.println(1);
    	} else {
    		System.out.println(2);
    	}
    }
    
    void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}