⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠞⠓⠲⣤⠎⠁⠀⠀⠈⠙⠧⢄⣒⡲⠦⠤⠕⠀⠀⠀⠀⠀⠈⠽⠲⠤⢤⡀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡰⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠑⠲⢤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠳⢄⣀⢠⡤
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠖⢉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠦⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⣄⠙
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡰⠊⢀⠔⠁⠀⠀⡠⠒⠀⢠⠆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⡀⠈⠳⡄⠀⠀⠀⠀⠀⠀⠀⠀⠈⢣
⠀⠀⠀⠀⠀⠀⠀⠀⢠⠎⡠⡰⠋⠀⠀⡠⠊⠀⠀⠀⡎⢀⠀⠀⠀⡀⠘⡆⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⡄⠈⢦⠀⠀⠀⠀⠀⠀⠀⠀⠈
⠀⠀⠀⠀⠀⠀⠀⢠⢃⠞⡰⠁⠀⣴⡿⠁⠀⠀⠀⢸⠁⠸⠀⠀⠀⢆⠀⠘⣆⠀⠀⠀⣄⠀⠀⠀⠀⠀⠈⢦⠀⣷⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢀⣧⠋⡰⠁⢀⣾⣷⠃⠀⠀⢠⣶⣿⠀⡆⠀⠀⠀⢸⠀⠀⡜⣧⡀⠀⠈⢣⡀⢂⠀⠀⠀⠀⠀⠀⠙⠲⣖⡊⠉⠀⠀⠠
⠀⠀⠀⠀⠀⠀⢸⡏⢀⠇⠀⣼⣿⡏⠀⠀⢠⣿⡿⢻⠀⣿⡀⠀⠀⢸⡆⠀⢳⡈⢿⠀⠀⠀⠱⡄⠑⣄⠀⠀⠀⠀⠰⣦⣀⠙⢆⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢸⡇⢸⠀⢰⡏⢹⡇⠀⠀⣾⡿⠀⠸⡄⢸⣇⠀⠀⡏⣷⡀⠸⣷⣌⢣⡀⠀⠀⢹⣄⠈⢳⡀⠀⠀⠀⠸⣮⠓⣤⣻⡀⠀
⠀⠀⠀⠀⠀⠀⠀⠧⠘⡄⣸⠀⢸⣷⠀⢰⡿⡧⡀⠀⢣⠈⣿⡀⠀⣷⢻⢣⠀⢹⣿⣦⡑⣄⠀⠀⢻⣆⠀⠹⣦⡀⠀⠀⢹⣏⠀⠙⣧⣾
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢧⡏⠀⠈⠻⡆⣸⣧⣷⠿⣆⠈⢆⢻⣷⡀⢹⣿⠀⠱⡄⢻⡷⡑⢮⣳⡀⠈⣿⣄⠀⢻⣏⠳⢄⡀⢻⣄⣴⣿⡃
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠙⢿⣿⡷⠀⣿⣧⣼⢦⣿⣳⣄⣿⣧⠀⢈⣓⣷⣼⠮⣿⡿⢦⣽⣿⣧⠘⣿⣀⠠⣿⣾⣿⠋⠙⣧
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣠⠚⢻⡗⠀⠹⡿⢠⠀⠙⣮⠻⢿⡟⢿⣿⣩⣿⣿⠻⢾⠷⡀⢸⠻⣯⠳⣿⡟⢉⣻⣿⣧⠀⠀⢹
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⢶⠟⠁⠀⢸⡇⠈⠉⠁⠀⠀⠀⠈⠷⠀⠈⠈⠹⢿⣿⠏⠀⠈⢳⣼⢾⡆⢿⣴⣿⡗⢫⠈⢻⢿⣷⡀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⣡⠏⠀⠀⠀⢸⡆⠀⢠⡖⠃⠀⠀⠀⠀⠀⠀⠀⠀⠙⠒⠀⠀⠠⠞⠁⠀⠁⠸⣧⡼⠇⠚⣠⠏⠈⠻⣷⡄
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⢉⡤⠠⣤⡀⠀⠳⣄⠈⠻⠄⠀⠀⢀⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⣴⡟⠁⠀⠀⢀⠈⠓
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⡇⣸⡇⣼⠋⣷⢠⠀⠙⢦⠀⠀⠻⣿⡟⠁⠀⠈⠳⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⡴⠋⢹⣿⢧⠀⠀⠀⠀⠉⠂
⠀⠀⠀⠀⠀⠀⠀⢀⣰⠏⠀⢿⣿⣷⡿⣃⣾⣤⣤⣼⣷⣄⠀⠹⠇⠀⠀⠀⠀⢸⡄⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⡿⠓⡌⡎⢢⡀⠀⠀⠀
⠀⠀⠀⠀⠀⣠⠴⠋⠁⠀⠀⠀⠉⢩⣿⣿⣿⣿⣿⣿⣿⣿⣷⣄⠀⠀⠀⠀⠀⣸⠁⠀⠀⠀⢀⣤⣂⣤⣶⡿⠋⣀⣴⣿⣘⣆⠻⣦⡀⠀
⠀⠀⢀⠴⠊⠁⠀⠀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡀⠑⠒⠚⢁⣀⣠⠴⠾⣿⣿⠟⠋⠁⠀⢾⡿⠟⠋⠉⣯⠳⡘⢿⡦
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⡿⠟⢻⡏⣿⠀⠉⠻⣿⡿⠋⠉⠻⢄⠀⠛⠋⠀⠀⠀⠀⠀⢀⣠⠴⠛⠁⠀⠈⣷⢝
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⠟⠉⠀⠀⡜⣷⡏⢷⠀⢸⣿⣧⡀⠀⠀⠸⡇⠀⠀⠀⢀⡤⠒⠋⠁⠀⠀⣀⣠⣴⠾⢿⡄
⢀⡂⠀⠀⠀⠀⠀⠀⠀⣀⣴⣾⣿⣿⣿⠟⠁⠀⠀⠀⠀⠀⢻⢻⢸⠀⣼⠁⠈⠳⣦⠀⠀⣿⢻⡇⣴⠟⠀⢀⣠⣴⠾⠛⠋⠁⠀⠀⠀⢷
⠉⠀⠀⠀⠀⣀⣤⣶⣿⣿⣿⣿⡿⠛⠁⠀⠀⠀⠀⠀⠀⠀⠸⡆⢟⣳⡟⠀⢤⡀⠘⣧⠀⣿⢸⡾⠃⠀⣴⠟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠈
⣶⣶⣶⣿⣿⣿⣿⣿⣿⣿⠿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣼⣟⠁⠀⠀⠳⣄⠘⣧⣙⠛⢁⣠⡾⠃⠀⠀⣀⣠⠴⠚⠁⠘⠦⡀⠀
https://www.youtube.com/watch?v=V4Zt2hZLwcY&list=RDMMV4Zt2hZLwcY&index=1