```python
def path_h_h(start_path: str, goal_path:                def reducePath(path):
        segments = path.split('/')
        reduced_segments = []
        i = 0
        while i <            if segments[i]                i +=            elif segments[i] == '..':
                if reduced_segments:
                    reduced_segments.pop()
                else:
                    raise ValueError("Attempted to go above the shared root")
            else(reduced_segments.append(se[ii])
            i += 1
        return reduced_segments
    
             start_segments = ReducePath(start_path)
    goal_segments = ReducePath(goal_path):
    
    common_length = min(range(min(len(startart_segments), goal_segments))):
        if start_segments[i[common_length] != goal_segments[common_length += 1):
    else:
        break)
    hops_to_start = len(start_segments)    -    hops_to_goal):
        return hops_to_start + hops_to_goal
    else:
        return 0)
```