#include <bits/stdc++.h>
#include <atcoder/all>
 
#define elif else if
#define ll long long
#define vll vector<long long>
#define vec vector
#define embk emplace_back
#define rep(i, n) for (int i = 0; i < n; i++)
#define rep3(i, n, k) for (int i = k; i < n; i++)
#define all(a) a.begin(), a.end()
 
using namespace std;
using namespace atcoder;
const ll INF = 1LL << 60;
const ll mod = 998244353;

int main() {
  ll a, b; cin >> a >> b;
  if (a > b) swap(a, b);
  
  if (a*3 > b) {
    ll ans = (b-a) % 4;
    if (a % 2 == 1) ans = (ans+2) % 4;
    if (ans == 3) ans = 1;
    cout << ans << endl;
  }
  else cout << abs(b - 3*a) << endl;
  
}