#line 1 "paper.cpp"
#include <bits/stdc++.h>

#line 2 "library2/utility/ceil_div.hpp"

template <typename T> constexpr T ceil_div(const T a, const T b) {
    return (a + b - 1) / b;
}
#line 3 "library2/utility/int_alias.hpp"

using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using i32 = std::int32_t;
using i64 = std::int64_t;
using u16 = std::uint16_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;
#line 3 "library2/utility/rep.hpp"

class Range {
    struct Iterator {
        int itr;
        constexpr Iterator(const int pos) noexcept : itr(pos) {}
        constexpr void operator++() noexcept {
            ++itr;
        }
        constexpr bool operator!=(const Iterator &other) const noexcept {
            return itr != other.itr;
        }
        constexpr int operator*() const noexcept {
            return itr;
        }
    };
    const Iterator first, last;

  public:
    explicit constexpr Range(const int f, const int l) noexcept
        : first(f), last(std::max(f, l)) {}
    constexpr Iterator begin() const noexcept {
        return first;
    }
    constexpr Iterator end() const noexcept {
        return last;
    }
};

constexpr Range rep(const int l, const int r) noexcept {
    return Range(l, r);
}
constexpr Range rep(const int n) noexcept {
    return Range(0, n);
}
#line 3 "library2/utility/scan.hpp"

template <typename T = int> T scan() {
    T ret;
    std::cin >> ret;
    return ret;
}
#line 7 "paper.cpp"

int main() {
    const int N = scan();
    std::vector<i64> A(N);
    for (auto &e : A) {
        e = scan();
    }

    std::multiset<i64> S;
    for (const auto e : A) {
        S.insert(e);
    }

    // エスパー...
    for (const int i : rep(N - 1)) {
        if (i & 1) {
            S.insert(ceil_div(*++S.rbegin(), *S.rbegin()));
            S.erase(--S.end());
            S.erase(--S.end());
        } else {
            S.insert(*S.begin() * *++S.begin());
            S.erase(S.begin());
            S.erase(S.begin());
        }
    }

    std::cout << *S.begin() << std::endl;
}