```python
def hour_rate(rate: int) -> int:
    return rate


def week_pay(hours: int, rate: int) -> int:
    """Pay for a week, with overtime beyond forty hours."""
    if hours > 40:
        extra_hours = hours - 40
        return (40 * hour_rate(rate) + extra_hours * (hour_rate(rate) // 2))
    return hours * hour_rate(rate)
```