补全9月11日至13日课评：为13名学生创建请假文档，为5个班级创建总结文档

.claude/memory/temp/verify_structure2.py

@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+import io, re, sys
+
+def find_oj_section(html, start):
+    n = len(html)
+    depth = 1
+    i = start + len('<div class="oj-section"')
+    while depth > 0 and i < n:
+        o = html.find('<div', i)
+        c = html.find('</div>', i)
+        if c == -1:
+            return -1
+        if o != -1 and o < c:
+            depth += 1
+            i = o + 4
+        else:
+            depth -= 1
+            i = c + 6
+    return i
+
+for f in sys.argv[1:]:
+    c = io.open(f, encoding='utf-8').read()
+    pat = re.compile(r'<div class="oj-section" data-oj-section="([^"]+)">')
+    print('===', f.replace('\\', '/').split('/')[-1])
+    for m in pat.finditer(c):
+        name = m.group(1)
+        end = find_oj_section(c, m.start())
+        blk = c[m.start():end]
+        expl = blk.count('class="oj-explains"')
+        full = blk.count('class="prob-detail" onclick')
+        hw = blk.count('class="prob-detail homework"')
+        mark = 'OK' if (expl == 1 and full + hw == 5) else 'BAD'
+        print('  %-4s expl=%d full=%d homework=%d %s' % (name, expl, full, hw, mark))
+    print('  total homework-note count:', c.count('未提交 · 课后作业'))
+    print('  div balance:', c.count('<div'), '/', c.count('</div>'),
+          'OK' if c.count('<div') == c.count('</div>') else 'MISMATCH')