Append for OR Codechef Starters 73 (Rated till 6-Stars) problem solution

              

Append for OR Codechef Starters 73 (Rated till 6-Stars) problem solution

This post is all about the solution of the Append for OR Codechef Starters 73 (Rated till 6-Stars) problem solution.

Codechef 

Problem Statement:

Chef has a NN-length array AA.

Chef would like to append a non-negative integer XX to the array AA so that the bitwise OR of the entire collection becomes = Y=Y, i.e. (A 1 | A 2 | ldots | A N | X) = Y(A 1 A 2... A N X)=Y. (In this case, | denotes the bitwise OR operation.)

Find the smallest possible value of XX. If there is no possible value for XX, return -1.

Format of Input :

The number of cases will be indicated by a single integer TT in the first line of input.

Each test case's first and only line includes 2 space-separated integers NN and MM — the number of apples and oranges, respectively.

Format of the Output :

For every test case, output YES if the group is perfect and NO or else on a new line.

Each character can be printed in either uppercase or lowercase. The strings YES, yes, Yes, and yES, for example, are all considered identical.

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