#include <bits/stdc++.h>
using namespace std;

#ifdef _RUTHEN
#include <debug.hpp>
#else
#define show(...) true
#endif

using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); i++)
template <class T> using V = vector<T>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int A, B;
    cin >> A >> B;
    if (A > B) swap(A, B);
    // A <= B
    int ans = 1 << 30;
    for (int a = 0; a <= A; a++) {
        int good = a + a, bad = A - a + B - a;
        ans = min(ans, abs(good - bad));
    }
    cout << ans << '\n';
    return 0;
}