16d

⡏⠀⠀⠀⡀⡀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⢀⡀⡼⠀⢸⡟⡸⠀⠀⠀⠃⠀⠀⢸⡧⠜⠛⠛⣻⠃⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⢺⢾⡃⠀⠈⣴⠁⢻⡀⠀⠀⢀⡠⠀⠀⠀⠀⢸⣇⣤⡀⠀ ⠀⠀⠀⠀⠀⠀⠀⠸⡜⠂⠀⠀⣟⠀⢸⠑⠀⠰⠁⠀⠀⠀⠀⠀⠛⠉⡼⠁⠀ ⠀⠀⠀⠀⠀⠀⠀⠈⣷⣾⣿⣿⣿⣿⣾⣶⣶⣤⣀⡀⢰⠕⠋⠀⠀⠸⠧⣤⡄