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21 lines
380 B
21 lines
380 B
def convert (n):
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if n == 0:
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return '0'
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nums = []
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while n:
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n, r = divmod(n, 3)
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nums.append(str(r))
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return ''.join(reversed(nums))
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count=0
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n=1
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while(n<=523693181734689806809285195318):
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str1=convert(n)
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str2=convert(n-1)
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str2='0'*(len(str1)-len(str2))+str2
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for i in range(len(str1)):
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if(str1[i]!=str2[i]):
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count+=1
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n+=1
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print(count)
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