#!/usr/bin/env python3
# TODO: support nested lists

import sys
import re

def add_ids(ol):
    """add ids to all li"""
    id = ""
    for s in ol.previous_siblings:
        if not s.name:
            continue
        if s.name.startswith("h"):
            id = s.attrs["data-number"]
            break

    for i, li in enumerate(ol.find_all("li")):
        li["id"] = f"{id}-{i+1}"
        li["class"] = "rule"

header_re = re.compile(r'<h\d')
data_number_re = re.compile(r'data\-number="([^"]*)"')
def extract_headline_nr(line: str) -> str:
    m = data_number_re.search(line)
    if m:
        return m.group(1)
    else:
        return ""

headline = ""
i = 0
for line in sys.stdin.readlines():
    if header_re.match(line):
        headline = extract_headline_nr(line)
        h_idx = line.find('<h') + 3
        line = line[:h_idx] + ' class="rule"' + line[h_idx:]
    if '<ol' in line and headline:
        i = 1
    if '<li' in line and i:
        line = line.replace('<li', f'<li id="{headline}-{i}" class="rule"')
        i = i + 1
    if '</ol' in line:
        i = 0
    print(line, end="")