移除bbcode_to_html试试

web/template/syzoj/problem.php

@@ -122,7 +122,7 @@ if ($pr_flag) {
     function trans_md($str)
     {
       $s = $str;
-      $s = bbcode_to_html($s);
+      // $s = bbcode_to_html($s);
       if (
         strpos($s, "class='md") === false &&
         strpos($s, "class=\"md") === false
@@ -148,15 +148,15 @@ if ($pr_flag) {
           // echo $row['description'];
           echo trans_md($row['description']);
           if (isset($_SESSION[$OJ_NAME . '_' . 'administrator']) || isset($_SESSION[$OJ_NAME . '_' . "p" . $row['problem_id']])) {
-            // Only administrators or problem managers can see the source code toggle
+            // 管理员增加一个显示源数据
             echo '<div class="ui accordion" style="margin-top: 15px;">
               <div class="title">
                 <i class="dropdown icon"></i>
-                ' . $MSG_ADMIN_ONLY . ' - ' . $MSG_DESCRIPTION . ' ' . $MSG_SOURCE_CODE . '
+                Markdown原文
               </div>
               <div class="content">
                 <pre style="overflow: auto; max-height: 300px; border: 1px solid #ddd; padding: 10px; background-color: #f5f5f5;">' . 
-                  htmlspecialchars($row['description'], ENT_QUOTES, 'UTF-8') . 
+                  $row['description'] .
                 '</pre>
               </div>
             </div>';