old_contents: from django.contrib.auth.models import User
  from django.contrib.sitemaps import Sitemap
  from django.urls import reverse
  from django.utils import timezone
  
  from judge.models import Problem, Organization, Contest, BlogPost, Solution
  
  
  class ProblemSitemap(Sitemap):
      changefreq = 'daily'
      priority = 0.8
  
      def items(self):
          return Problem.objects.filter(is_public=True).values_list('code')
  
      def location(self, obj):
          return reverse('problem_detail', args=obj)
  
  
  class UserSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return User.objects.values_list('username')
  
      def location(self, obj):
          return reverse('user_page', args=obj)
  
  
  class ContestSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return Contest.objects.filter(is_public=True, is_private=False).values_list('key')
  
      def location(self, obj):
          return reverse('contest_view', args=obj)
  
  
  class OrganizationSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return Organization.objects.values_list('id', 'slug')
  
      def location(self, obj):
          return reverse('organization_home', args=obj)
  
  
  class BlogPostSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.7
  
      def items(self):
          return BlogPost.objects.filter(visible=True, publish_on__lte=timezone.now()).values_list('id', 'slug')
  
      def location(self, obj):
          return reverse('blog_post', args=obj)
  
  
  class SolutionSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.8
  
      def items(self):
          return (Solution.objects.filter(is_public=True, publish_on__lte=timezone.now(), problem__isnull=False)
                  .values_list('problem__code'))
  
      def location(self, obj):
          return reverse('problem_editorial', args=obj)
  
  
  class HomePageSitemap(Sitemap):
      priority = 1.0
      changefreq = 'daily'
  
      def items(self):
          return ['home']
  
      def location(self, obj):
          return reverse(obj)
  
  
  class UrlSitemap(Sitemap):
      def __init__(self, pages):
          self.pages = pages
  
      def items(self):
          return self.pages
  
      def location(self, obj):
          return obj['location'] if isinstance(obj, dict) else obj
  
      def priority(self, obj):
          return obj.get('priority', 0.5) if isinstance(obj, dict) else 0.5
  
      def changefreq(self, obj):
          return obj.get('changefreq', 'daily') if isinstance(obj, dict) else 'daily'
  
new_contents: from django.contrib.auth.models import User
  from django.contrib.sitemaps import Sitemap
  from django.urls import reverse
  from django.utils import timezone
  
  from judge.models import Problem, Organization, Contest, BlogPost, Solution
  
  
  class ProblemSitemap(Sitemap):
      changefreq = 'daily'
      priority = 0.8
  
      def items(self):
          return Problem.objects.filter(is_public=True, is_organization_private=False).values_list('code')
  
      def location(self, obj):
          return reverse('problem_detail', args=obj)
  
  
  class UserSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return User.objects.values_list('username')
  
      def location(self, obj):
          return reverse('user_page', args=obj)
  
  
  class ContestSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return Contest.objects.filter(is_public=True, is_private=False).values_list('key')
  
      def location(self, obj):
          return reverse('contest_view', args=obj)
  
  
  class OrganizationSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.5
  
      def items(self):
          return Organization.objects.values_list('id', 'slug')
  
      def location(self, obj):
          return reverse('organization_home', args=obj)
  
  
  class BlogPostSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.7
  
      def items(self):
          return BlogPost.objects.filter(visible=True, publish_on__lte=timezone.now()).values_list('id', 'slug')
  
      def location(self, obj):
          return reverse('blog_post', args=obj)
  
  
  class SolutionSitemap(Sitemap):
      changefreq = 'hourly'
      priority = 0.8
  
      def items(self):
          return (Solution.objects.filter(is_public=True, publish_on__lte=timezone.now(), problem__isnull=False)
                  .values_list('problem__code'))
  
      def location(self, obj):
          return reverse('problem_editorial', args=obj)
  
  
  class HomePageSitemap(Sitemap):
      priority = 1.0
      changefreq = 'daily'
  
      def items(self):
          return ['home']
  
      def location(self, obj):
          return reverse(obj)
  
  
  class UrlSitemap(Sitemap):
      def __init__(self, pages):
          self.pages = pages
  
      def items(self):
          return self.pages
  
      def location(self, obj):
          return obj['location'] if isinstance(obj, dict) else obj
  
      def priority(self, obj):
          return obj.get('priority', 0.5) if isinstance(obj, dict) else 0.5
  
      def changefreq(self, obj):
          return obj.get('changefreq', 'daily') if isinstance(obj, dict) else 'daily'
  
subject: Remove organization private problems from sitemap