#include <bits/stdc++.h>
using namespace std;
int n,a[100001],num;
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;++i) scanf("%d",&a[i]);
	sort(a+1,a+1+n,greater<int>());
	for(int i=1;i<=n;++i){
		num+=a[i];
		for(int j=i+1;j<=n;++j) a[j]=sqrt(a[j]);
	}
	printf("%d\n",num);
	return 0;
}