迷宫问题

def solve(____):
    from collections import deque
    maze = [list(map(int, row.split(____))) for row in maze.split(____)]
    directions = [(____, ____), (____, ____), (____, -____), (____)]
    start = (____, ____)
    end = (____)
    queue = deque([(____)])
    visited = {start}
    while queue:
        (____), path = queue.popleft()
        if (____) == end:
            for p in path:
                print(____)
            return
        for dr, dc in directions:
            nr, nc = r + dr, c + dc
            if ____ <= nr < m and ____ <= nc < n and maze[nr][nc] == ____ and (____) not in visited:
                visited.add((____))
                queue.append(((____), path + [(____)]))