#include <bits/stdc++.h>

#define show(x) cerr << #x << " = " << x << endl

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v)
{
    os << "sz=" << v.size() << "\n[";
    for (const auto& p : v) {
        os << p << ",";
    }
    os << "]\n";
    return os;
}

template <typename S, typename T>
ostream& operator<<(ostream& os, const pair<S, T>& p)
{
    os << "(" << p.first << "," << p.second
       << ")";
    return os;
}


constexpr ll MOD = 1e9 + 7;

template <typename T>
constexpr T INF = numeric_limits<T>::max() / 100;

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N;
    cin >> N;
    multiset<int> st;
    for (ll i = 0; i < N; i++) {
        int x;
        cin >> x;
        st.insert(x);
    }

    for (int i = 0; i < N - 1; i++) {
        const int maxi = *st.rbegin();
        auto min_it = st.begin();
        const int sum = maxi + (*min_it) / 2;
        st.erase(min_it);
        st.erase(st.find(maxi));
        st.insert(sum);
    }
    cout << (*st.begin()) << endl;

    return 0;
}