Given set . Find two integers, and (where ), from set such that the value of is the maximum possible and also less than a given integer, . In this case, represents the bitwise AND operator.
The first line contains an integer, , the number of test cases.
Each of the subsequent lines defines a test case as space-separated integers, and , respectively.
For each test case, print the maximum possible value of on a new line.
All possible values of and are:
The maximum possible value of that is also is , so we print on a new line.