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Maximum AND

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4.3 (56 votes)

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Basic programming

Bit manipulation

Easy

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Problem

68% Success 17889 Attempts 20 Points 1s Time Limit 256MB Memory 1024 KB Max Code

Given two numbers A and B . Find the value of pair (P,Q) such that A <= P < Q <= B value of P AND Q is maximum where AND is a binary operator. Refer to this link for more information about AND operator : http://en.wikipedia.org/wiki/Bitwise_operation#AND Input: First line of input contains number of test cases T . Each test case contains two numbers A and B . Output: For each test case print the value of maximum AND. * Constraints: * 1<= T <=1000 1<= A < B <=10 18

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