#include <iostream>
#include <vector>
#include <cmath>
#include <map>
#include <set>
#include <iomanip>
#include <queue>
#include <algorithm>
#include <numeric>
#include <deque>
#include <complex>
#include <cassert>

using namespace std;
using ll = long long;

int main(){

    ll A, B, ans=1e5;
    cin >> A >> B;
    for (int i=0; i<=A; i++){
        ans = min(ans, abs(B-A+2*i-2*(A-i)));
    }

    cout << ans << endl;

    return 0;
}