#include "bits/stdc++.h"
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
#define printall(n,array) for(int i=0;i<n;i++){cout<<array[i]<<" ";}cout<<endl;
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 1000000007; //10^9+7

int p;
ll dp[30][2][2][3];

int main(){
  cin>>p;
  dp[0][0][0][0]=1;
  REP(i,p+1){
    REP(j,2){
      int lim;
      if(j==1)lim=9;
      else if(j==0&&i==0)lim=1;
      else lim=0;
      REP(k,2){
        REP(l,3){
          REP(m,lim+1){
            dp[i+1][j||m<lim][k||m==3][(l+m)%3]+=dp[i][j][k][l];
          }
        }
      }
    }
  }
  ll ans=0;
  REP(j,2)REP(k,2)REP(l,3){
    if(k==1||l==0){
      ans+=dp[p+1][j][k][l];
    }
  }
  print(ans);
}