diff --git a/README.md b/README.md
index 4b52ba210..580d60e39 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ SCNUOJ 可对用户在线提交的源代码进行编译和执行，并通过预
 ### 华南师大软院在线评测系统
 
 - [oj.socoding.cn](https://oj.socoding.cn/) - 外网入口
-- [oj-internal.socoding.cn](https://oj-internal.socoding.cn/) - 校园网入口
+- [10.191.65.243:5000](http://10.191.65.243:5000/) - 校园网入口
 
 ### 帮助文档
 
diff --git a/messages/zh-CN/app.php b/messages/zh-CN/app.php
index 6a4e74fa6..d7ece61ed 100644
--- a/messages/zh-CN/app.php
+++ b/messages/zh-CN/app.php
@@ -241,5 +241,6 @@
     'Current time' => '当前时间',
     'Register' => '注册',
     'Kanban' => '看板',
-    'The submission interval is %d seconds, and you can submit again after %d seconds.' => '提交间隔为 %d 秒，%d 秒后可以再次提交。'
+    'The submission interval is %d seconds, and you can submit again after %d seconds.' => '提交间隔为 %d 秒，%d 秒后可以再次提交。',
+    'Punish time' => '罚时'
 ];
diff --git a/migrations/m211018_061720_add_contest_penalty_config.php b/migrations/m211018_061720_add_contest_penalty_config.php
new file mode 100644
index 000000000..5ecd3c0ae
--- /dev/null
+++ b/migrations/m211018_061720_add_contest_penalty_config.php
@@ -0,0 +1,40 @@
+<?php
+
+use yii\db\Migration;
+
+/**
+ * Class m211018_061720_add_contest_penalty_config
+ */
+class m211018_061720_add_contest_penalty_config extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+        $this->addColumn('{{%contest}}', 'punish_time',  $this->smallInteger()->defaultValue(20));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+        $this->dropColumn('{{%contest}}', 'punish_time');
+    }
+
+    /*
+    // Use up()/down() to run migration code without a transaction.
+    public function up()
+    {
+
+    }
+
+    public function down()
+    {
+        echo "m211018_061720_add_contest_penalty_config cannot be reverted.\n";
+
+        return false;
+    }
+    */
+}
diff --git a/models/Contest.php b/models/Contest.php
index b1d20458d..2e8eaaa39 100644
--- a/models/Contest.php
+++ b/models/Contest.php
@@ -25,6 +25,7 @@
  * @property int $created_by
  * @property string $ext_link
  * @property string $invite_code
+ * @property int $punish_time
  */
 class Contest extends \yii\db\ActiveRecord
 {
@@ -85,7 +86,7 @@ public function rules()
             [['title', 'start_time', 'end_time'], 'required'],
             [['start_time', 'end_time', 'lock_board_time'], 'safe'],
             [['description', 'editorial', 'invite_code', 'ext_link'], 'string'],
-            [['id', 'status', 'type', 'scenario', 'created_by', 'group_id', 'enable_print', 'enable_clarify'], 'integer'],
+            [['id', 'status', 'type', 'scenario', 'created_by', 'group_id', 'enable_print', 'enable_clarify', 'punish_time'], 'integer'],
             [['title'], 'string', 'max' => 255],
         ];
     }
@@ -108,6 +109,7 @@ public function attributeLabels()
             'scenario' => Yii::t('app', 'Scenario'),
             'ext_link' => '站外比赛',
             'invite_code' => '邀请码',
+            'punish_time' => '罚时',
         ];
     }
 
@@ -435,6 +437,7 @@ public function getICPCRankData($lock = true, $endtime = null)
         $start_time = strtotime($this->start_time);
         $lock_time = 0x7fffffff;
         $contest_end_time = strtotime($this->end_time);
+        $punish_time = intval($this->punish_time ?? 20);
         if ($endtime == null) {
             $endtime = $contest_end_time;
         }
@@ -528,7 +531,7 @@ public function getICPCRankData($lock = true, $endtime = null)
                 } else {
                     $result[$user]['ac_time'][$pid] = 0;
                 }
-                $result[$user]['time'] += $sec + $result[$user]['wa_count'][$pid] * 60 * 20;
+                $result[$user]['time'] += $sec + $result[$user]['wa_count'][$pid] * 60 * $punish_time;
             } else if ($row['result'] <= 3) {
                 // 还未测评
                 ++$result[$user]['pending'][$pid];
diff --git a/modules/admin/views/contest/_form.php b/modules/admin/views/contest/_form.php
index c2b7a8744..2509844ec 100644
--- a/modules/admin/views/contest/_form.php
+++ b/modules/admin/views/contest/_form.php
@@ -75,6 +75,12 @@
     ])->label(false) ?>
     <p></p>
 
+    <div class="alert alert-light"><i class="fas fa-fw fa-info-circle"></i> 设置比赛的罚时（分钟），仅在 ICPC 赛制生效，不填则默认 20 分钟。</div>
+    <?= $form->field($model, 'punish_time', [
+        'template' => "<div class=\"input-group\"><div class=\"input-group-prepend\"><span class=\"input-group-text\">罚时</span></div>{input}</div>",
+        'options' => ['class' => '']
+    ])->textInput()->label(false) ?>
+    <p></p>
 
     <div class="alert alert-light"><i class="fas fa-fw fa-info-circle"></i> 设置比赛可见性。公开：任何用户均可参加比赛，若启用邀请码则正确填写邀请码的用户均可参赛。私有：任何时候比赛均只能由参赛用户访问，且比赛用户需要在后台手动添加。隐藏：前台无法看到比赛。</div>
 
diff --git a/modules/admin/views/contest/create.php b/modules/admin/views/contest/create.php
index 5afd3221b..d4552f3d2 100644
--- a/modules/admin/views/contest/create.php
+++ b/modules/admin/views/contest/create.php
@@ -15,6 +15,7 @@
 $model->scenario = $model::SCENARIO_ONLINE;
 $model->enable_clarify = 1;
 $model->enable_print = 0;
+$model->punish_time = 20; //罚时初始值
 ?>
 <div class="contest-create">
 
diff --git a/modules/admin/views/contest/view.php b/modules/admin/views/contest/view.php
index 126dac30d..59b6a9a51 100644
--- a/modules/admin/views/contest/view.php
+++ b/modules/admin/views/contest/view.php
@@ -146,6 +146,7 @@
                 'end_time',
                 'lock_board_time',
                 'description:html',
+                'punish_time',
             ],
         ]) ?>
     </div>