using System;
public class Program
{
public static void Main()
Console.WriteLine("Za unetih n clanova niza izracunati sumu kubova tih brojeva");
int n = int.Parse(Console.ReadLine());
int[] a = new int[n];
for(int i = 0; i<n;i++)
a[i] = int.Parse(Console.ReadLine());
}
double suma = 0;
for(int i = 0;i<n;i++){
suma += Math.Pow(a[i], 3);
Console.WriteLine(suma);