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import cp_library.__header__
import cp_library.bit.__header__
import cp_library.bit.pack.__header__
def pack_sm(N: int): s=N.bit_length(); return s,(1<<s)-1
'''
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https://kobejean.github.io/cp-library
'''
def pack_sm(N: int): s=N.bit_length(); return s,(1<<s)-1