using System;

using System.Linq;

public class Program

{

    static void PrintPrimesLinqStyle(int upTo)

        {

            var limit = upTo + 1;

            var isPrime = Enumerable.Range(0, limit).Select(x => true).ToList();

            Enumerable.Range(2, limit - 2).ToList().ForEach(i => { if (isPrime[i]) { Console.WriteLine(i); Enumerable.Range(2, (upTo - i)/i).ToList().ForEach(j => isPrime[j*i] = false); } });

        }

    public static void Main()

    {

        PrintPrimesLinqStyle(1000);

    }

}