原题如下,求大神解释下这题到底啥意思= = 我看了半天愣是没看懂 Problem Steven has an array of N non-negative integers. The i-th integer (indexed starting from 0) in the array is Ai. Steven really likes subintervals of A that are xor-even. Formally, a subinterval of A is a pair of indices (L, R), denoting the elements A...