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edited Nov 14, 2017 at 1:25

edited Nov 14, 2017 at 1:25

Python 3, (削除) 68 (削除ここまで) 66(削除) 66 (削除ここまで) 60 bytes

^{-2 bytes thanks to Mr. Xcoder!}

^{-4 bytes thanks to ovs!}

^{-2 bytes thanks to Erik the Outgolfer!}

lambda n:max((n>>i+8<<i)+(n&2**i-1)n%2**i|n>>i+8<<i for i in range(len(bin(n))-109))

^{-2 bytes thanks to Mr. Xcoder!}

lambda n:max((n>>i+8<<i)+(n&2**i-1)for i in range(len(bin(n))-10))

^{-2 bytes thanks to Mr. Xcoder!}

^{-4 bytes thanks to ovs!}

^{-2 bytes thanks to Erik the Outgolfer!}

lambda n:max(n%2**i|n>>i+8<<i for i in range(len(bin(n))-9))

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edited Nov 13, 2017 at 19:41

edited Nov 13, 2017 at 19:41

^{-2 bytes thanks to Mr. Xcoder!}

lambda n:max((n>>i+8<<i)+(n&2**i-1)for i in range(n.bit_lengthlen(bin(n))-810))

lambda n:max((n>>i+8<<i)+(n&2**i-1)for i in range(n.bit_length()-8))

^{-2 bytes thanks to Mr. Xcoder!}

lambda n:max((n>>i+8<<i)+(n&2**i-1)for i in range(len(bin(n))-10))

answered Nov 13, 2017 at 18:33

answered Nov 13, 2017 at 18:33

lambda n:max((n>>i+8<<i)+(n&2**i-1)for i in range(n.bit_length()-8))