public static class Test
{
	public static bool Run()
	{
		string s = "foobar";
		int len = 3;
		switch (s.Substring(1, len)) {
		case "":
		case "foobar":
			return false;
		case "ba":
		case "oob":
			return true;
		default:
			return false;
		}
	}
}