Treasure Hunt

string_of_items = input().split('|')
command = input()
stolen_items = []

while command != 'Yohoho!':
    command = command.split()
    if 'Loot' in command:
        for i in range(1, len(command)):
            if command[i] not in string_of_items:
                string_of_items.insert(0, command[i])

    elif 'Drop' in command:
        index = int(command[1])
        if 0 <= index < len(string_of_items):
            item = string_of_items.pop(index)
            string_of_items.append(item)

    elif 'Steal' in command:
        count = int(command[1])
        if count >= len(string_of_items):
            stolen_items = string_of_items
            print(', '.join(stolen_items))
            print('Failed treasure hunt.')
            exit()
        else:
            stolen_items = string_of_items[-count:]
            del string_of_items[-count:]
            print(', '.join(stolen_items))

    command = input()

if len(string_of_items) > 0:
    sum_of_items = 0
    for item in string_of_items:
        sum_of_items += len(item)
    print(f'Average treasure gain: {(sum_of_items/len(string_of_items)):.2f} pirate credits.')