class Cell:
    def __init__(self, x, y, is_wall=False, is_start=False, is_exit=False):
        self.x = x
        self.y = y
        self.is_wall = is_wall
        self.is_start = is_start
        self.is_exit = is_exit

    def is_passable(self):
        return not self.is_wall

    def __repr__(self):
        if self.is_wall:
            return '#'
        if self.is_start:
            return 'S'
        if self.is_exit:
            return 'E'
        return ' '


class Maze:
    def __init__(self, width, height, cells, start, exit_cell):
        self.width = width
        self.height = height
        self._cells = cells
        self.start = start
        self.exit = exit_cell

    def get_cell(self, x, y):
        if 0 <= x < self.width and 0 <= y < self.height:
            return self._cells[y][x]
        return None

    def get_neighbors(self, cell):
        directions = [(0, -1), (0, 1), (-1, 0), (1, 0)]
        neighbors = []
        for dx, dy in directions:
            neighbor = self.get_cell(cell.x + dx, cell.y + dy)
            if neighbor is not None and neighbor.is_passable():
                neighbors.append(neighbor)
        return neighbors

    def render(self, path=None, player_pos=None):
        path_set = set((c.x, c.y) for c in path) if path else set()

        for row in self._cells:
            line = ''
            for cell in row:
                if player_pos and cell.x == player_pos.x and cell.y == player_pos.y:
                    line += 'P'
                elif cell.is_wall:
                    line += '#'
                elif cell.is_start:
                    line += 'S'
                elif cell.is_exit:
                    line += 'E'
                elif (cell.x, cell.y) in path_set:
                    line += '.'
                else:
                    line += ' '
            print(line)