anchor.diff:                          else
                               td(solved='0')
                                   i.fa.fa-minus-circle(style='color:#DE2121')
  -                    td.id
  +                    else
  +                        td.h
  +                    td
                           a(href='{% url "problem_detail" problem.code %}')= problem.name
                       td= problem.group.full_name
                       td= problem.code
  
positive.code:                 if request.user.is_authenticated
                      th.solved
                          i.fa.fa-check
                  th.problem Problem
                  th.category Category
                  th.code Code
  
negative.code:             width: 100%
          }
  
          #problem-table td:nth-child(3),
          td:nth-child(4),
          td:nth-child(6),
          td:nth-child(7) {
              text-align: left;
              padding: 0 1em 0 1em;
          }
  
          #problem-table td:nth-child(2) {
              text-align: left;
              padding-left: 1em;
          }
  
          .h {
              display: none;
          }
  
          #problem-table .code, .points, .users {
  