using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static int CalculateSumOfSquares(List<int> numbers)

    {

        int result = 0;

        foreach (var num in numbers)

        {

            int square = num * num;

            result = result + square;

        }

        return result;

    }

​

    public static void Main()

    {

        List<int> inputNumbers = new List<int> { 1, 2, 3, 4, 5 };

        int sumOfSquares = CalculateSumOfSquares(inputNumbers);

        Console.WriteLine("Sum of squares: " + sumOfSquares);

    }

}