def calculate_route_stats(elevation_points):
    """Calculate few statistics from elevation points."""
    total_ascent = 0
    total_descent = 0
    curr = elevation_points[0]

    for point in elevation_points:
        if point > curr:
            total_ascent += point - curr
        else:
            total_descent += curr - point
        curr = point

    return int(total_ascent), int(total_descent)