mirror of
https://github.com/Alexander-D-Karpov/scripts.git
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26 lines
499 B
Python
26 lines
499 B
Python
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def to_6(n):
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s = ""
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while n:
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s += str(n % 6)
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n //= 6
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return s[::-1]
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c = 0
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ch = "02468"
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for i in range(100000, 1000000):
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s = to_6(i)
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if s.count("2") == 1:
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ind = s.index("2")
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if ind == 0:
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if s[1] in ch:
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c += 1
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elif ind == len(s) - 1:
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if s[-2] in ch:
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c += 1
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else:
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if s[ind - 1] in ch and s[ind + 1] in ch:
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c += 1
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print(c)
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