#ifdef LOCAL
#include <local.hpp>
#else
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
#define debug(...) (static_cast<void>(0))
#define postprocess() (static_cast<void>(0))
#endif

// #include "atcoder/dsu.hpp"
// #include "atcoder/modint.hpp"
// using mint = atcoder::modint998244353;
// using mint = atcoder::modint1000000007;

using namespace std;
using ll = long long;
using ld = long double;

void solve([[maybe_unused]] int test) {
    ll A, B;
    cin >> A >> B;

    ll ans = numeric_limits<ll>::max();

    for (ll ebi_ebi = 0; ebi_ebi <= min(A, B); ebi_ebi++) {
        ll ebi_asi = B - ebi_ebi;
        ll asi_ebi = A - ebi_ebi;
        ll asi_asi = B - ebi_asi;

        if (ebi_ebi < 0) continue;
        if (ebi_asi < 0) continue;
        if (asi_ebi < 0) continue;

        ans = min(ans, abs((ebi_ebi + asi_asi) - (ebi_asi + asi_ebi)));
    }

    cout << ans << endl;
}

int main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);

    int t = 1;
    // cin >> t;
    for (int _t = 1; _t <= t; _t++) solve(_t);

    postprocess();
}