class Student
    attr_accessor :id, :surname, :name, :patronymic, :phone, :telegram, :email, :git
  
    def initialize(surname:, name:, patronymic:, id: nil, phone: nil, telegram: nil, email: nil, git: nil)
        @surname = surname
        @name = name
        @patronymic = patronymic
        @id = id
        @phone = phone
        @telegram = telegram
        @email = email
        @git = git
    end

    def to_s
        "Student: #{@surname} #{@name} #{@patronymic}\n" \
        "ID: #{@id || 'N/A'}\n" \
        "Phone: #{@phone || 'N/A'}\n" \
        "Telegram: #{@telegram || 'N/A'}\n" \
        "Email: #{@email || 'N/A'}\n" \
        "Git: #{@git || 'N/A'}"
    end
  end