#include <bits/stdc++.h>
using namespace std;

constexpr int mod = 1000000007;
constexpr long long M = 1e9;

long long modpow(long long a, long long r) {
    assert(r > 0);
    long long ret = 1;
    while (r) {
        if (r & 1) ret = ret * a % mod;
        r >>= 1;
        a = a * a % mod;
    }
    return ret;
}

long long solve(vector<long long> &A) {
    int N = A.size();
    long long curr = 1;
    long long Ans = 1;
    int l = 0;
    vector<long long> C(N+1, 0), D(N+1, 0);
    for (int i = 0; i < N; i++) {
        curr *= A[i];
        while (curr >= M) {
            C[l] += i - l;
            D[l] += 1, D[i] -= 1;
            curr = curr / A[l]; l++;
        }    
    }
    while (l < N) {
        C[l] += N - l;
        D[l] += 1, D[N] -= 1;
        l++;
    }
    for (int i = 0; i < N; i++) {
        Ans = Ans * modpow(A[i], C[i]) % mod;
        D[i+1] += D[i];
        C[i+1] += C[i] - D[i];
    }
    return Ans;
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int N; cin >> N;
    vector<long long> A;
    long long Ans = 1;
    for (int i = 0; i < N; i++) {
        long long x; cin >> x;
        if (x == 0) {
            Ans = Ans * solve(A) % mod;
            A.clear();
        } else {
            A.emplace_back(x);
        }
    }
    if (!A.empty()) Ans = Ans * solve(A) % mod;
    cout << Ans << "\n";
    return 0;
}