#include "bits/stdc++.h"
using namespace std;
#define fastcin {\
    cin.tie(0);\
    ios::sync_with_stdio(false);\
}
#define rep(i, a, b) for(int i = a; i < b; i++)
#define print(x) cout << x << "\n"
#define VSORT(v) sort(v.begin(), v.end());
typedef vector<int> vi;

int main() {
    fastcin;
    int n;
    cin >> n;
    vi x;
    rep(i, 0, n) {
        int in;
        cin >> in;
        x.push_back(in);
    }
    VSORT(x);
    rep(i, 0, n-1) {
        x[n-1] += x[i]/2;
    }
    print(x[n-1]);
    return 0;
}