/** * @FileName a.cpp * @Author kanpurin * @Created 2020.06.19 22:35:30 **/ #include "bits/stdc++.h" using namespace std; typedef long long ll; constexpr int MOD = 1e9 + 7; struct mint { private: long long x; public: mint(long long x = 0) :x((MOD+x)%MOD) {} mint(std::string &s) { long long z = 0; for (int i = 0; i < s.size(); i++) { z *= 10; z += s[i] - '0'; z %= MOD; } this->x = z; } mint& operator+=(const mint &a) { if ((x += a.x) >= MOD) x -= MOD; return *this; } mint& operator-=(const mint &a) { if ((x += MOD - a.x) >= MOD) x -= MOD; return *this; } mint& operator*=(const mint &a) { (x *= a.x) %= MOD; return *this; } mint& operator/=(const mint &a) { long long n = MOD - 2; mint u = 1, b = a; while (n > 0) { if (n & 1) { u *= b; } b *= b; n >>= 1; } return *this *= u; } mint operator+(const mint &a) const { mint res(*this); return res += a; } mint operator-(const mint &a) const { mint res(*this); return res -= a; } mint operator*(const mint &a) const { mint res(*this); return res *= a; } mint operator/(const mint &a) const { mint res(*this); return res /= a; } friend std::ostream& operator<<(std::ostream &os, const mint &n) { return os << n.x; } bool operator==(const mint &a) const { return this->x == a.x; } }; template T pow(T k, U n, T unity = 1) { while (n > 0) { if (n & 1) { unity *= k; } k *= k; n >>= 1; } return unity; } int main() { int n;cin >> n; vector a(n); for (int i = 0; i < n; i++) { cin >> a[i]; if (a[i] == 0) { cout << 0 << endl; return 0; } } vector sum(n); int r = 0; ll total = 1; for (int l = 0; l < n; l++) { while (l < r && total >= 1000000000) { total /= a[l]; l++; } while(r < n && total * a[r] < 1000000000) { total *= a[r]; r++; } sum[r-1] += 1; if (l-1 >= 0) sum[l-1] += -(r-l+1); if (l-2 >= 0) sum[l-2] += r-l; total /= a[l]; if (l == r) r++; } for (int i = n-2; i >= 0; i--) { sum[i] += sum[i+1]; } for (int i = n-2; i >= 0; i--) { sum[i] += sum[i+1]; } mint ans = 1; for (int i = 0; i < n; i++) { ans *= pow(mint(a[i]),sum[i]); } cout << ans << endl; return 0; }