#include <iostream>
    #include <string>
    #include <vector>
    #include <memory>
    #include <algorithm>
    
    class Student {
    private:
        std::string name;

    public:
        Student(const std::string& name_) : name(name_) {}
        const std::string& getName() const { return name; }
    };

    class Class {
    private:
        typedef std::vector<std::shared_ptr<Student>> SubscriptionList;
        SubscriptionList students;
        const unsigned int MaxSubscribers;

    public:
        Class(unsigned int maxSubscribers) : MaxSubscribers(maxSubscribers) {}

        bool subscribe(std::shared_ptr<Student>& student) {
            if(students.size() >= MaxSubscribers) {
                return false; // Class is full, can't subscribe
            }

            // May be put additional checks here, to prevent multiple subscrptions
            students.push_back(student);
            return true; // Sucessfully subscribed the class
        }

        void unsubscribe(std::shared_ptr<Student>& student) {
            SubscriptionList::iterator it = students.begin();
            for(;it != students.end();++it) {
                if(it->get() == student.get()) {
                    break;
                }
            }
            students.erase(it);
        }
        
        void showSubscribedStudents(std::ostream& os) {
        	unsigned int i = 1;
            for(SubscriptionList::iterator it = students.begin();
                it != students.end();
                ++it, ++i) {
                os << i << ". " << (*it)->getName() << std::endl;
            }
        }
    };
    
    int main()
    {
        unsigned int amount;
        std::cin >> amount;
        std::cin.ignore(1,'\n');

        Class theClass(amount);

        for(unsigned int i = 0; i <= amount; ++i)
        {
            std::string name;
            std::getline(std::cin,name);
            std::shared_ptr<Student> student(new Student(name));
            theClass.subscribe(student);
        }
        
        theClass.showSubscribedStudents(std::cout);
    }