#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define all(x) (x).begin(),(x).end() #define rep(i,m,n) for(int i = m;i < n;++i) #define pb push_back #define fore(i,a) for(auto &i:a) #define rrep(i,m,n) for(int i = m;i >= n;--i) #define INF INT_MAX/2 using namespace std; using ll = long long; using R = double; using Data = pair>; const ll MOD = 1e9 + 7; const ll inf = 1LL << 50; struct edge { ll from; ll to; ll cost; }; int main() { ll n; cin >> n; ll ans = 1; for (ll i = 4; i <= 2 * n; i += 2) { ans *= i * (i - 1) / 2; ans %= MOD; } cout << ans << endl; return 0; }