AtCoder Regular Contest 094 E - Tozan and Gezan （博弈论 2个和相同序列双方轮流减一得最后完全相同序列）

Problem Statement

You are given sequences A and B consisting of non-negative integers. The lengths of both A and B are N, and the sums of the elements in A and B are equal. The i-th element in A is Ai, and the i-th element in B is Bi.

Tozan and Gezan repeats the following sequence of operations:

• If A and