you are given an Array A with N numbers, you will be dividing the array in two sets, such that if A[i] can only belong either to set 1 or set 2, you will take get a number x by taking or of all elements of set 1 and similarly a number y from set 2, you have to find the maximum value of X & Y.

(well i am not able to do either cause it is created by me only)