/* -*- coding: utf-8 -*-
 *
 * 3108.cc:  No.3108 Luke or Bishop - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* main */

int main() {
  int gx, gy;
  scanf("%d%d", &gx, &gy);

  int c = 0;
  if (gx == 0 && gy == 0) c = 0;
  else if (gx == 0 || gy == 0 || gx == gy || gx == -gy) c = 1;
  else c = 2;

  printf("%d\n", c);

  return 0;
}