#include <bits/stdc++.h>
using namespace std;

struct uns_t {} uns;
template <typename Element, typename Head, typename ...Args>
auto vec(Element init, Head arg, Args ...args) {
    if constexpr (sizeof...(Args) == 0) return std::vector(arg, init);
    else return std::vector(arg, vec(init, args...));
}
template <typename Element, typename Head, typename ...Args>
auto vec(uns_t, Head arg, Args ...args) {
    return vec(Element(), arg, args...);
}

int main() {
    constexpr int64_t mod = 1e9 + 7;

    int n; cin >> n;

    auto dp = vec<array<int64_t, 10>>(uns, n + 1);
    dp[0][0] = 1;
    for (int i = 1; i <= n; ++i) {
        int64_t sum = 0;
        for (int j = 0; j <= 9; ++j) {
            sum += dp[i - 1][j];
            sum %= mod;
            dp[i][j] = sum;
        }
    }

    int64_t ans = 0;
    for (auto e : dp[n]) {
        ans += e;
        ans %= mod;
    }

    cout << ans << endl;
}