#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
    return (ull)rng() % B;
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int a,b; cin >> a >> b;
    int res = a+b;
    for (int i = 0; i <= a; ++i) {
        if (b < i) continue;
        int c = 2*i;
        res = min(res, abs((a+b-c)-c));
    }
    cout << res << endl;
}