srubsko unleashed

import re

pattern = re.compile(
    r"^(?P<name>\w+(?: \w+)*) \@(?P<venue>\w+(?: \w+)*) (?P<price>\d+) (?P<count>\d+)$")
venues = {}

while True:
    line = input()
    if line == 'End':
        break
    match_object = re.match(pattern, line)
    if match_object:
        venue = match_object.group('venue')
        signer = match_object.group('name')
        income = int(match_object.group('price')) * int(match_object.group('count'))
        venues.setdefault(venue, {})
        venues[venue].setdefault(signer, 0)
        venues[venue][signer] += income

for v in venues:
    print(v)
    for s, i in sorted(venues[v].items(), key=lambda x: -x[1]):
        print(f"#  {s} -> {i}")