#include <iostream>

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

    int N;
    std::cin >> N;

    //std::vector<int> v(N+1);
    int v[4];

    v[0] = 1;
    v[1] = 2;
    v[2] = 4;
    v[3] = 0;

    int a, b, c, j = 3;

    for (size_t i = 3; i < N + 1; i++)
    {
        if (j > 3)
            j = 0;

        c = j;
        a = c - 1;
        b = c - 3;
        
        if (b < 0) {
            b += 4;
            if (a < 0)
                a = 3;
        }

        v[c] = (2 * v[a] + 2 * v[b]);

        if (v[c] > 20210108) 
            v[c] -= 20210108;

        j++;
    }

    std::cout << v[N % 4];
}