#include using namespace std; #define rep(i, m, n) for(int(i) = (int)(m); i < (int)(n); ++i) #define rep2(i, m, n) for(int(i) = (int)(n)-1; i >= (int)(m); --i) #define REP(i, n) rep(i, 0, n) #define REP2(i, n) rep2(i, 0, n) #define all(hoge) (hoge).begin(), (hoge).end() #define en '\n' using ll = long long; using ull = unsigned long long; template using vec = vector; template using vvec = vector>; typedef pair P; constexpr long long INF = 1LL << 60; constexpr int INF_INT = 1 << 25; constexpr long long MOD = (ll)1e9 + 7; // constexpr long long MOD = 998244353LL; using ld = long double; static const ld pi = 3.141592653589793L; typedef vector Array; typedef vector Matrix; template inline bool chmin(T &a, T b) { if(a > b) { a = b; return true; } return false; } template inline bool chmax(T &a, T b) { if(a < b) { a = b; return true; } return false; } struct Edge { ll to, rev; long double cap; Edge(ll _to, long double _cap, ll _rev) { to = _to; cap = _cap; rev = _rev; } }; using Edges = vector; using Graph = vector; void add_edge(Graph &G, ll from, ll to, long double cap, bool revFlag, long double revCap) { G[from].push_back(Edge(to, cap, (ll)G[to].size())); if(revFlag) G[to].push_back(Edge(from, revCap, (ll)G[from].size() - 1)); } template struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int)(1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt(t); return (is); } static int get_mod() { return mod; } }; using mint = ModInt; void solve() { ll n; cin >> n; vec a(n); REP(i, n) cin >> a[i]; REP(i, n) { if(a[i] == 0) { cout << 0 << en; return; } } int r = 0; mint ans = 1; mint sum = 1; ll mul = 1; ll ma = (ll)1e9; REP(l, n) { while(r < n and mul * a[r] < ma) { mul *= a[r]; sum *= mul; r++; } ans *= sum; mul /= a[l]; sum /= mint(a[l]).pow(r - l); } cout << ans << en; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); solve(); // ll t;cin>>t;REP(i,t) solve(); return 0; }