4. List Operations
На ето тази 4. List Operations задача всичко и работи в visual studio обаче като я кача в judge и ми дава
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object. at methods.Program.Main(String[] args) ето това. https://pastebin.com/LAZfY44S?fbclid=IwAR2GbUMGrkMZCHLh9WvQ_RPYck8L7MYKSpvq2Xh4hx2AKGRia7TwaeADFvI