package main

import . "fmt"

func main() {
	var x, y int
	Scan(&x, &y)
	switch {
		case x == 0 && y == 0:
			Println(0)
		case x == 0 || y == 0:
			Println(1)
		case x == y || x == -y:
			Println(1)
		default:
			Println(2)
	}
}