"""LLM 模块共享工具函数。"""
from __future__ import annotations


def actual_1x2(home: int, away: int) -> str:
    """实际比分 → 胜平负(单一权威源:backtest.py 与 eval.py 共用)。"""
    if home > away:
        return "1"
    if home == away:
        return "X"
    return "2"