#include <iostream>
#include <string>

using namespace std;

int main() {
  int x, y; cin >> x >> y;
  if (x == 0 && y == 0) {
    cout << 0 << endl;
  }
  else if (abs(x) == abs(y)) {
    cout << 1 << endl;
  }
  else if (x == 0 || y == 0) {
    cout << 1 << endl;
  }
  else {
    cout << 2 << endl;
  }
  return 0;
}