⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠤⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠂⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⡙⡲⢤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠂⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⡔⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠂⠄⢂⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣄⠀⠀⠀⠀⠀⠀⠀⠀⢑⢠⣍⣳⡦⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⣈⠀⢀⡞⠁⠀⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⢀⠈⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠐⠀⠀⠈⠀⠒⠠⠄⠀⠀⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠰⡢⠀⠀⠀⠀⠀⠀⠀⠀⠊⠉⠃⠁⠊⠟⢦⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⣀⣤⠿⠑⠉⠙⠀⠀⠀⠀⠀⠀⠀⠀⢠⠝⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠀⠀⠠⠄⠐⠂⠉⠀⠄⠐⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠠⠀⠀⠀⢀⡀⣈⣁⣂⡠⠀⠀⠀⠀⢂⠸⢕⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠙⣪⣷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡀⣠⣿⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣊⠟⠀⠀⠀⡀⠀⠄⣐⣀⣉⣀⣀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠂⢸⢹⠁⠀⠀⠀⠀⠀⠁⡂⠀⠂⣇⢻⢼⣦⡀⠀⠀⠀⠀⠀⠠⡀⠀⠁⢰⣟⠹⠛⠓⠄⠀⠀⠀⠀⠀⠀⠠⠀⠐⠛⠁⠹⡇⠀⢀⡼⠀⠀⠀⠀⠀⡀⣤⣪⠿⢣⠠⠁⠄⡈⠅⠂⠁⠀⠀⠀⡿⡻⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡒⠒⠠⠤⢈⣙⠳⠤⡤⠀⣀⠀⠀⠈⢀⡀⡛⢧⣤⡙⠓⢛⠦⣤⠀⠀⠐⠌⠀⠀⣼⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⡧⣤⡝⠀⠀⠀⣠⡤⠛⠗⠋⡡⣴⠛⢐⡁⠀⠀⠀⢀⠀⢠⠤⠶⢛⡉⠤⠅⠒⢒⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠐⠀⠈⠁⠀⠤⢤⣀⠴⠒⠒⠒⠂⠠⢄⠀⠠⢀⡒⣶⢿⡯⠀⠒⠈⠁⠀⠀⠀⠀⠁⠐⣉⣟⠳⡄⠪⠛⠂⠀⠥⠈⣈⠀⠄⠈⢄⢄⢻⣿⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⢠⣷⡿⠀⡀⠐⢀⠁⠦⠀⠀⠚⡋⢁⠼⣻⣍⠐⠀⠀⢀⠀⠀⠀⠁⠒⠀⠽⣿⣶⠒⡀⠄⠀⢠⠤⠀⠒⠒⠒⠢⣀⡤⠤⠀⠀⠁⠀⠒⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠂⠀⠀⠀⠀⠀⠈⠀⠄⠱⣭⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⢀⣦⣭⣽⡥⡂⡊⢤⣶⠶⡖⠖⠆⢀⠑⠤⡀⡈⣬⡛⣷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⣠⣟⠋⡠⢮⠆⠀⠀⠒⢶⣴⣢⡦⠁⡄⡮⣿⣭⣤⡀⠠⠁⠀⠀⠀⠀⠀⠀⠀⠀⡯⡙⡀⠀⠈⠀⠀⠀⠀⠀⠀⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢘⢤⣀⠀⠀⠀⡀⠄⠀⣈⡤⠭⠀⠒⠒⠨⠬⡟⢦⠛⢫⣿⡄⠀⠀⠁⠀⠙⡨⠈⠛⣝⢿⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡴⠏⡡⠎⠺⠐⠈⠀⠀⢀⣼⣲⠟⣤⢞⠧⠄⠒⠒⠂⠩⢤⣄⠀⠠⠀⠀⠀⠀⣀⣤⠋⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠛⢀⢀⢀⣠⠔⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⡐⠠⠈⠈⢻⡀⠀⠄⡀⠀⠈⠑⠑⡙⢳⣻⣧⠀⠀⠀⠀⠀⠀⠈⢠⡛⢊⠈⠠⠀⠀⠀⢠⠀⣠⣽⠃⠂⠔⢀⡁⠀⠀⠀⠀⠀⠀⠀⠀⠙⠒⣤⡀⢄⡀⠙⢁⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠀⣩⠶⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠁⠀⠀⠘⣿⣾⣄⣌⢂⠀⠐⠀⠻⣦⠛⢟⣵⡀⠀⠀⢀⠊⡴⠝⣰⡶⡣⠈⠀⣠⣠⣄⣼⣾⠃⠀⠀⡠⠀⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠲⣍⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⡀⠀⢐⣈⣠⡤⠒⠊⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠱⡁⠀⠉⠉⠩⡳⠀⠀⠁⠪⢦⠙⠝⣷⠀⠀⠂⢴⠋⣰⠉⠀⠀⠀⡀⠋⠈⠉⠀⠈⢞⠁⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠒⢤⣄⣀⡂⠀⢀⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠀⠀⠀⠀⠈⠀⠀⠀⠀⠁⢑⠨⠙⡆⢰⣍⠇⠤⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠡⠟⠛⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
凯文-马丁
⣿⣿⣿⣿⣿⣿⢟⠃⠊⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠙⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣿⣿⣿⣿
⡿⠛⠙⠙⠡⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢄⣀⣬⣿⣿⣿⣿
⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢘⣽⣿⣿⣿⣿⣿
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠻⢿⣿⣿⣿
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣿⣿⣿
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⡀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⠀⠘⢿⣿
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣿⣷⣿⣾⣽⣦⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⠄⠀⠀⠀⠀⠀⢹
⠀⠀⠀⠀⠀⠀⠀⠠⠀⣠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣾⣴⣢⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠰⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢠⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣶⣤⣄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠃⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣾⣽⡿⠿⠛⠛⠛⠛⠛⠛⠛⠛⠛⠛⠻⠿⠿⣿⣿⣿⣿⣿⣿⣶⣦⣤⣄⣀⣀⣀⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡀⠀⠀⠀⠀⠀⣀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠋⠁⢀⣤⣤⣦⣶⣦⣦⣤⣤⣤⣤⣤⣤⣤⣄⣀⡀⠘⢋⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⢀⣀⣀⣤⣤⣤⣤⣤⣶⣶⣿⣿⣿⣶⣶⣬⡿⡄⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣠⣾⣿⠿⠟⠛⠛⠉⠉⠛⠛⠛⠉⠭⠭⣛⡻⠿⣦⡀⠀⣹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⣿⣛⠿⠿⠿⠿⠿⠿⣿⣿⣿⣿⣿⣿⣿⣦⠀⠀⠀⢀
⠀⠀⠀⠀⢠⣴⣶⣿⡛⠋⠀⢀⠀⢀⣀⣀⣠⣄⣄⣶⣾⣿⣿⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣭⣭⣴⣶⣦⣤⣀⣀⣀⣴⣶⣀⣉⣻⣿⣿⣿⣿⡇⠀⠀⢸
⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀
⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡆⠀⠀
⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀
⠀⠀⠀⠀⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿⡟⠛⠛⠿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀⠀
⠀⠀⠀⠀⠀⠻⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣇⡀⠀⠀⠀⠀⣀⣀⠀⣠⣤⣥⡠⢌⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀
⠀⠀⠀⠀⠀⠀⠈⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⢿⠟⠋⠁⠀⠀⢀⣉⣿⣿⣿⣿⣿⠒⠉⠉⠛⠟⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡏⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠼⢿⣿⣿⣿⣿⣿⣿⣿⠿⡿⠟⠋⠋⠈⠀⠀⠀⠀⠀⠀⠀⠶⣿⣿⣿⣿⣿⠿⠦⠄⠀⠀⠀⠀⠙⡛⢟⡿⢿⣿⣿⣿⣿⣿⣿⣿⣿⠏⠉⠀⠀⠀⢘
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⠿⣿⡿⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠉⠉⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠈⢿⣿⣿⣿⠉⠁⠀⠀⠀⠀⠀⠈
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠀⠀⠀⠰⢶⣶⣶⣶⣶⣶⣿⣿⣿⣿⣿⣿⣾⣿⣶⣦⣄⡀⠀⠀⠀⠀⠐⡔⠙⠛⠀⠀⠀⠀⠀⠀⠀⠀
⡴⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠨⢿⣿⣿⣿⣿⣦⠤⠀⠄⠄⠌⠁⠈⠉⠉⢉⠉⣭⣿⣿⣿⣿⣿⣿⣿⢶⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀
⢁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠉⠿⣿⣿⣿⣷⣦⠁⠀⠀⠀⠀⠀⠀⢨⣿⣿⣿⣿⣿⣿⣿⣿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣈⠱
⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠙⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⢴⠂⠋⠹⠿⠟⠟⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠆⠾⢵
⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣔⠶⠾⠫⣖
⠢⠀⣂⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠚⠙⡟⣾⠤
⢋⢭⢶⡭⢖⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡀⠀⢀⣠⡴⣾⠭⠡⣆
⣔⣳⡞⠒⡈⡄⠠⠤⠰⡀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⢀⠬⣻⠯⣿⣿⣻⣾⣯⡋⡉⣩
⣧⡴⣓⡒⠛⠋⠀⣒⡉⢀⠀⣀⡑⠂⠒⢀⢄⡀⢀⡀⠀⠀⠀⠀⠀⠀⣀⣀⠀⢀⣀⠀⠀⠀⠀⠀⠀⠀⢠⡀⡠⠄⡀⠀⠀⢈⡄⣀⣦⣤⣾⡿⠶⢒⣭⢦⣷⢾⣦⣂⡿⢗
凯文-马丁
⣿⣿⡟⠃⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢻⣿⣿
⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠰⣶⣿⣿
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣿
⠀⠀⠀⠀⠀⢠⣤⣠⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡄⠀⠈⢻
⠀⠀⠀⠀⣠⣿⣿⣿⣿⣷⣦⣤⣄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠀⠀⠀
⠀⠀⠀⠸⠟⢋⣉⣉⣉⣉⡉⠛⠛⠻⢿⣷⣶⣤⣤⣤⡄⠀⠀⢀⣀⣠⣤⣀⡠⡄⠀⠀
⠀⠀⢀⣀⣴⠟⠛⠋⠙⢛⣉⣩⣟⣢⣉⣿⣿⣿⣿⣿⡷⠻⣟⠛⠛⢻⠿⣿⣿⣦⠀⢠
⠀⢀⣿⣿⣷⣶⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡆⠈
⠀⠸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀
⠀⠀⠙⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣍⠉⠀⣤⣨⣭⡉⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠀
⠀⠀⠀⠈⠽⣿⣿⣿⠿⠿⠛⠉⠉⠀⠀⠠⣾⣿⣿⡤⠀⠉⠛⠿⠿⢿⣿⣿⡿⠛⠀⢐
⠀⠀⠀⠀⠀⠈⠉⠀⠀⠀⣀⣀⣀⠀⠤⢤⢤⣴⣶⣶⣦⣦⣤⠀⠀⠈⠝⠋⠀⠀⠀⠀
⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠛⠿⣿⠯⠄⠀⠀⠀⠶⣿⣿⣿⡟⠁⠀⠀⠀⠀⠀⠀⠠⡢
⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠀⠉⠁⠀⠀⠀⠀⠀⠀⠀⣀⠴⣏
⣀⡆⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⢀⡨⡍⢃
⡻⡭⠄⢠⡐⢀⡠⠄⢀⢀⠀⠀⠀⢀⡀⣀⠀⠀⠀⠀⣀⢀⠀⢀⣠⣠⡼⢽⣛⣿⣂⢴
凯文-马丁
⡿⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢹⣿
⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⢻⣿
⠀⠀⠀⠀⣤⣤⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹
⠀⠀⢐⠿⠿⠿⠿⠿⠶⣦⣤⣄⣀⣀⠀⠀⠀⠀⠀⢀⠀⠀
⠀⢀⣀⠾⠛⢛⣛⣛⣗⣆⣸⣿⣿⣿⣶⣻⣛⣿⡿⣿⣆⠀
⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡀
⠀⠸⢿⣿⣿⣿⣿⣿⣿⠍⠉⢉⡭⠭⢿⣿⣿⣿⣿⣿⡿⠁
⠀⠀⠈⠛⢿⠛⠛⠉⠀⠀⠐⠛⠛⠂⡀⠉⠛⠻⣿⠛⠃⠀
⠃⠀⠀⠀⠀⠀⠀⠻⣿⣦⠈⠉⠩⣿⣿⡿⠃⠀⠀⠀⠀⣀
⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣗
⡁⠢⠄⢀⡀⢀⠀⠀⠀⠀⡀⠀⠀⠀⢀⠀⣀⢀⡶⣲⣾⡷