Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
double sum = 0;
int N=50;
for (int i = 1; i <= N; i++) <br> sum += 1 / Math.Pow(i, 3);
Console.WriteLine("Сумма = " + sum);
Console.ReadKey();
}
}
}