/** * author: otera **/ #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 int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; typedef long double ld; const int inf=1e9+7; const ll INF=1LL<<60 ; const ll mod=1e9+7 ; #define rep(i,n) for(int i=0;i=0;i--) #define Rep(i,sta,n) for(int i=sta;i=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) typedef complex Point; const ld eps = 1e-8; const ld pi = acos(-1.0); typedef pair P; typedef pair LDP; typedef pair LP; #define fr first #define sc second #define all(c) c.begin(),c.end() #define pb push_back #define debug(x) cerr << #x << " = " << (x) << endl; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } template struct Fp { long long val; constexpr Fp(long long v = 0) noexcept : val(v % MOD) { if (val < 0) val += MOD; } constexpr int getmod() { return MOD; } constexpr Fp operator - () const noexcept { return val ? MOD - val : 0; } constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; } constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; } constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; } constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; } constexpr Fp& operator += (const Fp& r) noexcept { val += r.val; if (val >= MOD) val -= MOD; return *this; } constexpr Fp& operator -= (const Fp& r) noexcept { val -= r.val; if (val < 0) val += MOD; return *this; } constexpr Fp& operator *= (const Fp& r) noexcept { val = val * r.val % MOD; return *this; } constexpr Fp& operator /= (const Fp& r) noexcept { long long a = r.val, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } val = val * u % MOD; if (val < 0) val += MOD; return *this; } constexpr bool operator == (const Fp& r) const noexcept { return this->val == r.val; } constexpr bool operator != (const Fp& r) const noexcept { return this->val != r.val; } friend constexpr ostream& operator << (ostream &os, const Fp& x) noexcept { return os << x.val; } friend constexpr istream& operator >> (istream &is, Fp& x) noexcept { return is >> x.val; } friend constexpr Fp modpow(const Fp &a, long long n) noexcept { if (n == 0) return 1; auto t = modpow(a, n / 2); t = t * t; if (n & 1) t = t * a; return t; } }; const int MOD = 1000000007; //const int MOD = 998244353; using mint = Fp; void solve() { int n; cin >> n; vector a(n); rep(i, n) { cin >> a[i]; } vector sum(n + 1, (mint)1), ssum(n + 2, (mint)1); rep(i, n) { sum[i + 1] = sum[i] * (mint)a[i]; //cerr << sum[i + 1] << endl; } rep(i, n + 1) { ssum[i + 1] = ssum[i] * sum[i]; //cerr << ssum[i + 1] << endl; } mint ans = 1; int j = 0, cur = 1; for(int i = 0; i <= n - 1; ++ i) { if(i == j) { ++ j; cur *= a[i]; } while(j < n && cur * a[j] < 1e9) { cur *= a[j]; ++ j; } ans *= (ssum[j + 1] / ssum[i + 1]) / modpow(sum[i], j - i); //cerr << (ssum[j + 1] / ssum[i + 1]) / modpow(sum[i], j - i) << endl; cur /= a[i]; } cout << ans << endl; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(10); //int t; cin >> t; rep(i, t)solve(); solve(); return 0; }