#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    int N;
    cin >> N;
    vector<int> V(N);
    for ( int i = 0; i < N; i++ ) {
        cin >> V[i];
    }
    sort( V.begin(), V.end() );
    for ( int i = 0; i < N-1; i++ ) {
        V[N-1] += V[i]/2;
    }
    cout << V[N-1] << endl;
    return 0;
}