sample

using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp1
{

    class Input
    {
        private static IEnumerator<string> getin()
        {
            while (true)
                foreach (string s in Console.ReadLine().Split().Where(x => x.Length > 0))
                    yield return s;
        }

        private IEnumerator<string> inp = getin();
        public string GetString() { inp.MoveNext(); return inp.Current; }
        public int GetInt() { return int.Parse(GetString()); }
    }
    class Program
    {


        static void Main()
        {
            Input cin = new Input();
            //int k = cin.GetInt();



            int[] a = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };


            int d = 0;
            for (int i = 0; i < a.Length; ++i)
            {
                if (a[i] % 2 == 0)
                    d += a[i] * a[i];
            }
            Console.WriteLine("First case " + d);


            int b = a.Where(x => x % 2 == 0).Select(x => x * x).Aggregate((x, y) => x + y);
            Console.WriteLine("Second case " + b);


        }
    }
}