#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(v) v.begin(),v.end()
typedef long long ll;
 
#include<bits/stdc++.h>
using namespace std;

ll dp[1000100][2][10];
const int MOD=1e9+7;

int main() {
  ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  
  int n;
  cin>>n;
  string N="1";
  rep(i,n) N+='0';
  
  dp[0][0][0]=1;
  rep(i,n+1){
    int Ni=N[i]-'0';
    rep(j,2) rep(k,10) rep(x,10){
      int j2=j,k2=k;
      
      if(x<k2) continue;
      k2=x;
        
      if(!j2 && (x>Ni)) continue;
      if(x<Ni) j2=1;

      dp[i+1][j2][k2]=(dp[i+1][j2][k2]+dp[i][j][k])%MOD;
    }
  }
  ll ans=0;
  rep(i,10) ans=(ans+dp[n+1][1][i])%MOD;
  cout<<ans<<endl;
    
  return 0;
}