#include <iostream>
#include <vector>

using namespace std;

int main()
{
    int input;
    cin >> input;

    // int v[input];
    // v[0] = 2;
    // v[1] = 4;
    // v[2] = 10; //8+2
    // for (int n = 3; n < input; n++)
    // {
    //     v[n] = (2 * v[n - 1] + 2 * v[n - 3]) % 20210108;
    // }

    // cout << v[input - 1] << "\n";

    int a = 2;
    int b = 4;
    int c = 10;
    for (int n = 3; n < input; n += 3)
    {
        a = (2 * c + 2 * a) % 20210108;
        b = (2 * a + 2 * b) % 20210108;
        c = (2 * b + 2 * c) % 20210108;
    }
    if (input % 3 == 0)
        cout << c << "\n";
    if (input % 3 == 1)
        cout << a << "\n";
    if (input % 3 == 2)
        cout << b << "\n";
}