// {{{ Templates #include #define show(x) cerr << #x << " = " << x << endl using namespace std; using ll = long long; using pii = pair; using vi = vector; template ostream& operator<<(ostream& os, const vector& v) { os << "sz:" << v.size() << "\n["; for (const auto& p : v) { os << p << ","; } os << "]\n"; return os; } template ostream& operator<<(ostream& os, const pair& p) { os << "(" << p.first << "," << p.second << ")"; return os; } constexpr ll MOD = (ll)1e9 + 7LL; template constexpr T INF = numeric_limits::max() / 100; // }}} int main() { cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; ll oddsum = 1; ll evensum = 0; ll num = 1; for (int i = 2; i <= n; i++) { if (i % 2 == 0) { num = (i * oddsum) % MOD; evensum += num; evensum = evensum % MOD; } else { num = (i * evensum) % MOD; oddsum += num; oddsum = oddsum % MOD; } } cout << num << endl; return 0; }