#include <bits/stdc++.h>

#include <atcoder/all>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define FAST_IO                \
  ios::sync_with_stdio(false); \
  cin.tie(0);
const i64 INF = 1001001001001001001;
using Modint = atcoder::static_modint<998244353>;

int main() {
  FAST_IO
  auto ans = 0LL;

  i64 Gx, Gy;
  cin >> Gx >> Gy;

  if (Gx == 0 && Gy == 0) {
    cout << 0 << endl;
    return 0;
  }
  if (abs(Gx) == abs(Gy)) {
    ans = 1;
  } else if (Gx == 0 || Gy == 0) {
    ans = 1;
  } else {
    ans = 2;
  }

  cout << ans << endl;
}