#include <bits/stdc++.h>
using namespace std;
using lint = long long int;
template<class T = int> using V = vector<T>;
template<class T = int> using VV = V< V<T> >;
template<class T> void assign(V<T>& v, int n, const T& a = T()) { v.assign(n, a); }
template<class T, class... U> void assign(V<T>& v, int n, const U&... u) { v.resize(n); for (auto&& i : v) assign(i, u...); }

const lint mod = 1e9 + 7;
inline lint emod(lint a, lint p = mod) { return (a % p + p) % p; }
inline lint invm(lint a, lint p = mod) { a %= p; return a == 1 ? 1 : -p / a * invm(p % a) % p; }

V<lint> fact, ifact;
void init_table(int n) {
  fact.assign(n + 1, 1), ifact.assign(n + 1, 1);
  for (int i = 2; i < n + 1; i++) fact[i] = i * fact[i - 1] % mod;
  ifact[n] = invm(fact[n]);
  for (int i = n; i > 2; i--) ifact[i - 1] = i * ifact[i] % mod;
}

lint mulcomb(lint n, lint r) {
  if (n < 1 or r < 0) return 0;
  return fact[r + n - 1] * ifact[r] % mod * ifact[n - 1] % mod;
}

int main() {
  cin.tie(NULL); ios::sync_with_stdio(false);
  lint n; cin >> n;
  init_table(n + 20);
  lint res = mulcomb(10, n);
  cout << emod(res) << '\n';
}