#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(i, n) for (ll i = 0; i < n; i++)
#define FOR(i, a, b) for (ll i = a; i < b; i++)
#define len(v) ll(v.size())
#define fi first
#define se second

template <class T>
void cout_vec(const vector<T> &vec){
  for(auto itr:vec) cout<<itr<<' ';
  cout<<'\n';
}

typedef pair<ll,ll> P;
const ll mod=1e9+7;

ll dp[1000010][2][10];

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin>>n;
    string s;
    rep(i,n) s.push_back('9');
    dp[0][0][0]=1;
    rep(i,n)rep(j,2)rep(k,10){
      int x=s[i]-'0';
      for(int l=k;l<=(j?9:x);l++){
        (dp[i+1][j||(l<x)][l]+=dp[i][j][k])%=mod;
      }
    }
    ll ans=0;
    rep(k,10) (ans+=(dp[n][0][k]+dp[n][1][k])%mod)%=mod;
    cout<<ans<<endl;
}