#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define endl '\n' #define ALL(v) (v).begin(), (v).end() #define RALL(v) (v).rbegin(), (v).rend() #define UNIQ(v) (v).erase(unique((v).begin(), (v).end()), (v).end()) typedef long long ll; typedef long double ld; typedef pair P; typedef complex comp; typedef vector< vector > matrix; struct pairhash { public: template size_t operator()(const pair &x) const { size_t seed = hash()(x.first); return hash()(x.second) + 0x9e3779b9 + (seed<<6) + (seed>>2); } }; const int inf = 1e9 + 9; const ll mod = 1e9 + 7; const double eps = 1e-8; const double pi = acos(-1); int n; ll dp[5][410]; ll calc(int v, int k) { if (dp[v][k] < 0) { if (v == 0 && k == 0) { dp[v][k] = 1; } else if (v*n < k) { dp[v][k] = 0; } else { ll res = 0; for (int i = 0; i <= min(k, n); i++) { res += calc(v-1, k-i); } dp[v][k] = res; } } return dp[v][k]; } ll solve() { memset(dp, -1, sizeof(dp)); for (int i = 2*n; i <= n*4; i++) { calc(4, i); } ll res = 0; for (int i = 2*n; i <= 4*n; i++) { res += dp[4][i] * dp[4][6*n-i]; } return res; } void input() { cin >> n; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(15); input(); cout << solve() << endl; }