#include <bits/stdc++.h>
using namespace std;
#define int long long
const int maxn = 1e5;
int n,a[maxn + 5],ans;

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0),cout.tie(0);
	cin >> n;
	for(int i = 1;i <= n;i++){
		cin >> a[i];
	}
	sort(a + 1,a + n + 1,greater<int>());
	for(int i = 1;i <= n;i++){
		for(int j = 1;j <= i - 1;j++){
			a[i] = (int)sqrt(a[i] * 1.0);
		}
		ans += a[i];
	}
	cout << ans << endl;
	return 0;
}