Revenge of Nim(博弈论)

The first line contains a single integer T, indicating the number of test cases.Each test case begins with an integer N, indicating the number of heaps. Then N integer Ai follows, indicating the number of each heap successively, and the player must take objects in this order, from the first to the last.[Technical Specification]1. 1 <= T <= 1002. 1 <= N <= 1 0003. 1 <= Ai <= 1 000 000 000

，有的旅行是为了体验生活，感悟人生。