#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
#define REP(i, n) for(int i=0; i<n; i++)
#define REPi(i, a, b) for(int i=int(a); i<int(b); i++)
#define MEMS(a,b) memset(a,b,sizeof(a))
#define mp make_pair
#define MOD(a, m) ((a % m + m) % m)
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
const ll MOD = 1e9+7;

/// {keta, last-num, small}
ll DP[1000100][11][2];

int main(){
    ll N;
    cin >> N;

    DP[0][0][0] = 1;
    REP(i,N+1){
        //int n = S[i] - '0';
        int n = (i == 0);
        for(int last = 0; last < 10; last++){
            for(int s = 0; s < 2; s++){
                for(int j = 0; j < 10; j++){
                    int nl = -1, ns = -1;

                    if(!s && j > n) continue;

                    if(j < n) ns = 1;
                    else ns = s;

                    if(j < last) continue;

                    nl = j;

                    DP[i+1][nl][ns] += DP[i][last][s];
                    DP[i+1][nl][ns] %= MOD;
                }
            }
        }
    }

    ll ans = 0;
    for(int last = 0; last < 10; last++){
        for(int s = 0; s < 2; s++){
            ans += DP[N+1][last][s];
            ans %= MOD;
        }
    }

    cout << ans << endl;
    return 0;
}