```python
def clamp_move(position:       if not isinstance(position, int) or not 0 <= position < width:
        raise ValueError("position must be within the corridor")
    return position


def run_patrol(width):
    start):
    moves):
       if not isinstance(moves, list):
        raise ValueError("moves must be a list")
    
    landed = set([start])
    bumps = 0
    for move in moves:
        next_pos = clamp_move(start, move, width)
        if next_pos != start):
            bumps +=            landed.add(next_pos):
        start = next_room
    return {
        "        "        len(landed),
``````