#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using VI = vector<int>;
using VL = vector<ll>;
using PII = std::pair<int, int>;
using PLL = std::pair<ll, ll>;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define allpt(v) (v).begin(), (v).end()
#define allpt_r(v) (v).rbegin(), (v).rend()

const int mod = 1e9 + 7;
const string wsp = " ";
const string tb = "\t";
const string rt = "\n";

template <typename T>
void show1dvec(vector<T> v)
{
    int n = v.size() - 1;
    rep(i, n) cout << v[i] << wsp;
    cout << v[n] << rt;
    return;
}

template <typename T>
void show2dvec(vector<vector<T>> v)
{
    int n = v.size();
    rep(i, n) show1dvec(v[i]);
}

int mod6(string s)
{
    int x = 0;
    rep(i, s.length())
    {
        x *= 10;
        x += s[i] - '0';
        x %= 6;
    }
    return x % 6;
}

int main()
{

#ifdef DEBUG
    cout << "DEBUG MODE" << endl;
    ifstream in("input.txt"); //for debug
    cin.rdbuf(in.rdbuf());    //for debug
#endif

    string n, k, p = "428571";
    int q;
    cin >> n >> k;

    if (mod6(n) == 0)
        cout << 4 << rt;
    if (mod6(n) == 1)
        cout << 2 << rt;
    if (mod6(n) == 2)
    {
        if (mod6(k) % 2 == 1)
            cout << 8 << rt;
        if (mod6(k) % 2 == 0)
            cout << 7 << rt;
    }
    if (mod6(n) == 3)
        cout << 5 << rt;
    if (mod6(n) == 4)
        cout << 7 << rt;
    if (mod6(n) == 5)
    {
        if (mod6(k) % 2 == 1)
            cout << 1 << rt;
        if (mod6(k) % 2 == 0)
            cout << 2 << rt;
    }
    return 0;
}