18 lines
387 B
Python
18 lines
387 B
Python
# -*- encoding: utf-8 -*-
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import itertools
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import sys
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data = sys.stdin.read().strip()
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def index_of_first_n_differents(data: str, n: int) -> int:
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for i in range(len(data)):
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if len(set(data[i : i + n])) == n:
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return i + n
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return -1
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print(f"answer 1 is {index_of_first_n_differents(data, 4)}")
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print(f"answer 2 is {index_of_first_n_differents(data, 14)}")
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