๐น ๐ ๊ฐ๋ฅด์นจ
1. ๋ฌธ์ ๋งํฌ
2. ์ฝ๋
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from collections import Counter
N, K = map(int, input().split())
words = ''
essential_alpha = ['a', 'c', 'i', 'n', 't']
for _ in range(N):
word = input()
l = len(word)
word = word[4:l-4]
words += word
if K < 5:
print(0)
else:
words = list(words)
words_set = list(words)
sorted_alpha = []
for w in words_set:
if w in essential_alpha:
continue
sorted_alpha.append((words.count(w), w))
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