mod'rn problems
⠐⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠂
⠄⠄⣰⣾⣿⣿⣿⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣆⠄⠄
⠄⠄⣿⣿⣿⡿⠋⠄⡀⣿⣿⣿⣿⣿⣿⣿⣿⠿⠛⠋⣉⣉⣉⡉⠙⠻⣿⣿⠄⠄
⠄⠄⣿⣿⣿⣇⠔⠈⣿⣿⣿⣿⣿⡿⠛⢉⣤⣶⣾⣿⣿⣿⣿⣿⣿⣦⡀⠹⠄⠄
⠄⠄⣿⣿⠃⠄⢠⣾⣿⣿⣿⠟⢁⣠⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡄⠄⠄
⠄⠄⣿⣿⣿⣿⣿⣿⣿⠟⢁⣴⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⠄⠄
⠄⠄⣿⣿⣿⣿⣿⡟⠁⣴⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄⠄
⠄⠄⣿⣿⣿⣿⠋⢠⣾⣿⣿⣿⣿⣿⣿⡿⠿⠿⠿⠿⣿⣿⣿⣿⣿⣿⣿⣿⠄⠄
⠄⠄⣿⣿⡿⠁⣰⣿⣿⣿⣿⣿⣿⣿⣿⠗⠄⠄⠄⠄⣿⣿⣿⣿⣿⣿⣿⡟⠄⠄
⠄⠄⣿⡿⠁⣼⣿⣿⣿⣿⣿⣿⡿⠋⠄⠄⠄⣠⣄⢰⣿⣿⣿⣿⣿⣿⣿⠃⠄⠄
⠄⠄⡿⠁⣼⣿⣿⣿⣿⣿⣿⣿⡇⠄⢀⡴⠚⢿⣿⣿⣿⣿⣿⣿⣿⣿⡏⢠⠄⠄
⠄⠄⠃⢰⣿⣿⣿⣿⣿⣿⡿⣿⣿⠴⠋⠄⠄⢸⣿⣿⣿⣿⣿⣿⣿⡟⢀⣾⠄⠄
⠄⠄⢀⣿⣿⣿⣿⣿⣿⣿⠃⠈⠁⠄⠄⢀⣴⣿⣿⣿⣿⣿⣿⣿⡟⢀⣾⣿⠄⠄
⠄⠄⢸⣿⣿⣿⣿⣿⣿⣿⠄⠄⠄⠄⢶⣿⣿⣿⣿⣿⣿⣿⣿⠏⢀⣾⣿⣿⠄⠄
⠄⠄⣿⣿⣿⣿⣿⣿⣿⣷⣶⣶⣶⣶⣶⣿⣿⣿⣿⣿⣿⣿⠋⣠⣿⣿⣿⣿⠄⠄
⠄⠄⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠟⢁⣼⣿⣿⣿⣿⣿⠄⠄
⠄⠄⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠟⢁⣴⣿⣿⣿⣿⣿⣿⣿⠄⠄
⠄⠄⠈⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠟⢁⣴⣿⣿⣿⣿⠗⠄⠄⣿⣿⠄⠄
⠄⠄⣆⠈⠻⢿⣿⣿⣿⣿⣿⣿⠿⠛⣉⣤⣾⣿⣿⣿⣿⣿⣇⠠⠺⣷⣿⣿⠄⠄
⠄⠄⣿⣿⣦⣄⣈⣉⣉⣉⣡⣤⣶⣿⣿⣿⣿⣿⣿⣿⣿⠉⠁⣀⣼⣿⣿⣿⠄⠄
⠄⠄⠻⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣶⣶⣾⣿⣿⡿⠟⠄⠄
⠠⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
mod'rn solutions
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