#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, a[100005];
bool cmp(int x, int y) { return x > y; }
signed main() {
	freopen("p3.in", "r", stdin);
	freopen("p3.out", "w", stdout);
	cin >> n;
	for(int i = 1;i <= n;i++) cin >> a[i];
	sort(a + 1, a + n + 1, cmp);
	int ans = 0;
	for(int i = 1;i <= n;i++) {
		for(int j = 1;j < min(i, 8ll);j++) a[i] = floor(sqrt(a[i]));
		ans += a[i];
	}
	cout << ans << endl;
	return 0;
}