#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include <iomanip>
#include <array>
#include <numeric>
#include <regex>
#include <bitset>
#include <deque>

using namespace std;
typedef long long ll;
typedef pair<int, int> p_ii;

const int INF = 1e9;
const double PI = acos(-1.0);
const ll MOD = 1e9 + 7;

ll dp[1000010][10];

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

    dp[0][0]=1;

    for (int i = 1; i <= N; i++) {
        for (int j = 0; j < 10; j++) {
            for (int k = j; k < 10; k++) {
                dp[i][k]=(dp[i][k]+dp[i-1][j])%MOD;
            }
        }
    }

    ll res = 0;
    for (int i = 0; i < 10; i++) {
        res=(res+dp[N][i])%MOD;
    }

    cout<<res<<endl;

    return 0;
}