using System;

using System.Linq;

public class Program

{

    static bool ContainsSevenTimes(string str)

    {

        return 7 == str.AsEnumerable().Count( c => c == '-');

    }

    static void test(string str)

    {

        bool seven = ContainsSevenTimes(str);

        Console.WriteLine("{0}\t{1}", seven, str);

    }

    public static void Main()

    {

        test("Hello World");

        test("Hello-World-x-x-x-x-x-");

        test("Mono-vs-Spindi-vs-Michi-Wolf");

    }

}