#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

// [桁][mod 3][3がつく]
ll dp[20][3][2];

int main(){
    dp[0][0][0] = 1;
    rep(i, 19)rep(md3, 3)rep(th, 2){
        ll val = dp[i][md3][th];
        rep(d, 10)
            dp[i + 1][(md3 * 10 + d)%3][th | (d == 3)] += val;
    }
    int P;
    while(cin >> P){
        ll ans = -1;
        rep(i, 3)rep(j, 2)if(i==0||j==1)ans += dp[P][i][j];
        cout << ans << endl;
    }
}