#include <bits/stdc++.h>
using namespace std;
#define f(i,k,n) for(int i=k; i<n; i++)
#define ll long long
const int inf = INT_MAX;

void solve()
{
    int n;
    cin>>n;
    vector<int> torony(n+1,0);
    torony[0]=0;
    torony[1]=2;
    torony[2]=4;
    torony[3]=10;
    f(i,4,n+1)
    {
       torony[i]=(torony[i-1]*2 + torony[i-3]*2)%20210108;
    }
    cout<<torony[n]%20210108;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    //cin>>t;
    while(t--)  solve();
    return 0;
}