diff --git a/contest/views.py b/contest/views.py
index 05ae1dc..8f380dc 100644
--- a/contest/views.py
+++ b/contest/views.py
@@ -455,6 +455,12 @@ def _get_rank(contest_id):
             order_by("-total_ac_number", "total_time"). \
             values("id", "user__id", "user__username", "user__real_name", "user__userprofile__student_id",
                    "contest_id", "submission_info", "total_submission_number", "total_ac_number", "total_time")
+    rank_number = 1
+    for item in rank:
+        # 只有有ac的题目而且不是打星的队伍才参与排名
+        if item["total_ac_number"] > 0 and item["user__username"][0] != "*":
+            item["rank_number"] = rank_number
+            rank_number += 1
     return rank
 
 
@@ -478,6 +484,11 @@ def contest_rank_page(request, contest_id):
         else:
             rank = json.loads(rank)
 
+            # 2016-05-19 增加了缓存项目,以前的缓存主动失效
+            if "rank_number" not in rank[0]:
+                rank = _get_rank(contest_id)
+                r.set(cache_key, json.dumps([dict(item) for item in rank]))
+
     return render(request, "oj/contest/contest_rank.html",
                   {"rank": rank, "contest": contest,
                    "contest_problems": contest_problems,
diff --git a/template/src/oj/contest/contest_rank.html b/template/src/oj/contest/contest_rank.html
index b701a49..8dcdc4f 100644
--- a/template/src/oj/contest/contest_rank.html
+++ b/template/src/oj/contest/contest_rank.html
@@ -47,7 +47,7 @@
                         <tbody class="rank">
                         {% for item in rank %}
                             <tr>
-                                <th scope="row">{% if item.total_ac_number %}{{ forloop.counter}}{% else %}-{% endif %}</th>
+                                <th scope="row">{% if item.rank_number %}{{ item.rank_number }}{% else %}-{% endif %}</th>
                                 <td>
                                 <a href="/contest/{{ contest.id }}/submissions/?user_id={{ item.user__id }}">
                                     {{ item.user__username }}