#Дан текст. Выведите слово, которое в этом тексте встречается чаще всего. Если таких слов несколько, выведите #то, которое меньше в лексикографическом порядке.
from collections import Counter
 
m = []
file = open("input.txt")
k = "zzzzzzzzzzzzzzzz"
for line in file:
    freqs = Counter(line.split())
    max_values = max(freqs.values())
    min_key = min(freqs.keys())
    if k > min_key:
        k = min_key
 
if max_values == 1:
    print(k)
else:
    for word, count in freqs.items():
        if count > 1:
            m.append(word)
    (sorted(m))
    print(m[1])
 

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