#include<bits/stdc++.h>
using namespace std;
long long a[100005];
bool cmp(long long a,long long b){
	return a>b;
}
long long ssq(long long x,long long day){
	if(day == 1){
		return x;
	}
	day--;
	while(day--){
		if(x == 1){
			return 1;
		}
		x = (long long)sqrt(x);
	}
	return x;
}
int main(){
	long long n;
	scanf("%lld",&n);
	for(long long i = 1;i<=n;i++){
		scanf("%lld",&a[i]);
	}
	sort(a+1,a+n+1,cmp);
	long long ans = 0;
	for(long long i = 1;i<=n;i++){
		ans += ssq(a[i],i);
	}
	printf("%lld",ans);
	return 0;
}