using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(PrintHelloForNTimes(10));

    }

    public static string PrintHelloForNTimes(int occurences) => 

        $"number of times: {string.Concat(Enumerable.Repeat("hello ", occurences))}";

}