from collections import Counter
karta = Counter()
for pituh in ("foo", "bar", "foo"):
karta[pituh] += 1
print(karta)
ZnJvbSBjb2xsZWN0aW9ucyBpbXBvcnQgQ291bnRlcgoKa2FydGEgPSBDb3VudGVyKCkKCmZvciBwaXR1aCBpbiAoImZvbyIsICJiYXIiLCAiZm9vIik6CiAgICBrYXJ0YVtwaXR1aF0gKz0gMQoKcHJpbnQoa2FydGEp