class Maze: 
    def __init__(self, grid, start = None, exit = None):
        self.grid = grid 
        self.start = start 
        self.exit = exit 
        self.height = len(grid)
        self.width = len(grid[0]) if grid else 0

    # Создание новой ячейки
    def getCell(self, x, y): 
        if 0 <= y < self.height and 0 <= x < self.width:
            return self.grid[x][y] 
        return None

    # Ищет соседние проходимые клетки
    def getNeighbors(self, cell):
        directions = [(0,1),(1,0),(0,-1),(-1,0)]
        result = []

        for dx, dy in directions:
            nx, ny = cell.x + dx, cell.y + dy
            neighbor = self.getСell(nx, ny)
            if neighbor and neighbor.isPassable():
                result.append(neighbor)

        return result