# -*- 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])
    total_panels = 0
    bad = []
    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"')
        panels = blk.count('class="prob-detail"')
        total_panels += panels
        if expl != 1 or panels != 5:
            bad.append('%s: expl=%d panels=%d' % (name, expl, panels))
    print('  oj-sections:', c.count('data-oj-section='), '| total prob-detail:', total_panels)
    if bad:
        print('  MISMATCH blocks:', bad)
    else:
        print('  OK: every student has exactly 1 题目讲解 block with 5 panels')
    print('  div balance:', c.count('<div'), '/', c.count('</div>'))