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5088:Revenge of Nim II

题目描述
Nim is a mathematical game of strategy in which two players take turns removing objects from distinct heaps. On each turn, a player must remove at least one object, and may remove any number of objects provided they all come from the same heap.
---Wikipedia

Today, Nim takes revenge on you, again. As you know, the rule of Nim game is rather unfair, only the nim-sum (⊕) of the sizes of the heaps is zero will the first player lose. To ensure the fairness of the game, the second player has a chance to move some (can be zero) heaps before the game starts, but he has to move one heap entirely, i.e. not partially. Of course, he can’t move all heaps out, at least one heap should be left for playing. Will the second player have the chance to win this time?
输入解释
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.

[Technical Specification]
1. 1 <= T <= 100
2. 1 <= N <= 1 000
3. 1 <= Ai <= 1 000 000 000 000
输出解释
For each test case, output “Yes” if the second player can win by moving some (can be zero) heaps out, otherwise “No”.
输入样例
3
1
2
3
2 2 2
5
1 2 3 4 5
输出样例
No
Yes
Yes
提示
For the third test case, the second player can move heaps with 4 and 5 objects out, so the nim-sum of the sizes of the left heaps is 1⊕2⊕3 = 0.
来自杭电HDUOJ的附加信息
Recommend heyang

该题目是Virtual Judge题目,来自 杭电HDUOJ

题目来源 BestCoder Round #16

源链接: HDU-5088

最后修改于 2020-10-25T23:19:41+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
2000/1000MS(Java/Others) 32768/32768K(Java/Others)