#include <bits/stdc++.h>
typedef long long int ll;
using namespace std;

ll n, dp[1010101][10];
ll mod = 1e9 + 7;
int main() {
    ios::sync_with_stdio(false);
    cin >> n;// 1 < = 𝑁< = 1000000
    for (int i = 0; i < 10; i++)
        dp[1][i] = 1;

    for (int i = 1; i < n; i++) {
        for (int j = 0; j < 10; j++) {
            for (int next = j; next < 10; next++) {
                dp[i+1][next] += dp[i][j]%mod;
                
            }
        }
    }
    ll ans = 0;
    for (int i = 0; i < 10; i++)
        ans = (ans%mod + dp[n][i]%mod)%mod;
    

    return 0;
}