01_Concert.py

'''
     /\\\\\\\\\                            /\\\
    /\\////////\\\                         \/\\\
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    \/\\\       \/\\\   /\\/\\\\\\           \/\\\    /\\/\\\\\\\   \///   \///
     \/\\\\\\\\\\\\\\\  \/\\\////\\\     /\\\\\\\\\   \/\\\/////\\\   /\\\   /\\\
      \/\\\/////////\\\  \/\\\  \//\\\   /\\\////\\\   \/\\\   \///   \/\\\  \/\\\
       \/\\\       \/\\\  \/\\\   \/\\\  \/\\\  \/\\\   \/\\\          \/\\\  \/\\\
        \/\\\       \/\\\  \/\\\   \/\\\  \//\\\\\\\/\\  \/\\\          \/\\\  \/\\\
         \///        \///   \///    \///    \///////\//   \///           \///   \///

            /\\\\\\\\\\\\\
            \/\\\/////////\\\                                 /\\\
             \/\\\       \/\\\                                \/\\\
              \/\\\\\\\\\\\\\\    /\\\    /\\\   /\\/\\\\\\\   \/\\\\\\\\      /\\\\\\\\\
               \/\\\/////////\\\  \/\\\   \/\\\  \/\\\/////\\\  \/\\\////\\\   \////////\\\
                \/\\\       \/\\\  \/\\\   \/\\\  \/\\\   \///   \/\\\\\\\\/      /\\\\\\\\\\
                 \/\\\       \/\\\  \/\\\   \/\\\  \/\\\          \/\\\///\\\     /\\\/////\\\
                  \/\\\\\\\\\\\\\/   \//\\\\\\\\\   \/\\\          \/\\\_\///\\\  \//\\\\\\\\/\\
                   \/////////////     \/////////     \///           \///    \///    \////////\//           '''

import re

concert_dict = {}
bands_time = {}
popular_band_stars = ''

while True:
    command = re.split("; ", input())

    if "start of concert" in command:
        popular_band_stars = input()
        break

    elif "Add" in command:
        cmd_add = command[0]
        band_add = command[1]
        stars_add = re.split(", ", command[2])
        if band_add not in concert_dict:
            concert_dict[band_add] = stars_add
        else:
            for name in stars_add:
                if name not in concert_dict[band_add]
                    concert_dict[band_add].append(name)

    elif "Play" in command:
        cmd_play = command[0]
        band_play = command[1]
        time_play = int(command[2])
        if band_play not in bands_time:
            bands_time[band_play] = time_play
        else:
            bands_time[band_play] += time_play

for band, time in bands_time.items()
    print(f"Total time: {sum()}")


for band, time in sorted(bands_time.items(), key=lambda item: -item[1])
    print(f"{band} -> {time}")

if popular_band_stars in concert_dict:
    print(popular_band_stars)
    for star in concert_dict[popular_band_stars]
        print(f"=> {star}")