#include<bits/stdc++.h>
#define int long long
using namespace std;
int n, a[100005], s;
bool cmp(int x, int y) {
	return x > y;
}
signed main() {
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
	}
	sort(a + 1, a + n + 1, cmp);
	for (int i = 1; i <= n; i++) {
		s += a[i];
		for (int j = i + 1; j <= n; j++) {
			int y = sqrt(a[j]);
			a[j] = y;
		}
	} 
	cout << s << "\n";
	return 0;
}