Review of codeforces 484A Bits based on python
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484A. Bits
This task is mainly about using ‘|’ (按位或), which can guanrantee the number of '1' to be maximum.
The source code is relatively easy.
n = input()for i in xrange(n):l, r = map(int, raw_input().split())while (l | (l + 1) <= r):l |= l + 1print l
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