#include <bits/stdc++.h>

using namespace std;

int main() {
  int gx, gy; cin >> gx >> gy;
  if (gx == 0 and gy == 0){
  	cout << 0 << endl;
  } else if(abs(gx) == abs(gy)){
  	cout << 1 << endl;
  } else if (gx == 0 or gy == 0) {
  	cout << 1 << endl;
  } else {
  	cout << 2 << endl;
  }
}