No.1456 Range Xor
問題文最終更新日: 2021-12-26 01:33:43
English (AI translation)
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新入生プログラミングコンテスト 2021(夜の部)
(順位表)
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Problem Statement
You are given an integer $K$ and an integer sequence $A$ of length $N$.
If there exists a pair $i,j$($1 \leq i \leq j \leq N$) such that $A_i\oplus A_{i+1}\oplus ... \oplus A_j=K$, print Yes; otherwise, print No.
Here, $X\oplus Y$ denotes the bitwise exclusive OR of $X$ and $Y$.
Input
$N\ K$ $A_1\ A_2\ ...\ A_N$
- All inputs are integers.
- $ 1 \leq N \leq 10^5$
- $ 0 \leq A_i,K \leq 10^9$
Output
Print a newline at the end.
Sample
Sample 1
Input
5 11 5 2 8 1 3
Output
Yes
When $i=2,j=4$, we have $2 \oplus 8\oplus 1=K=11$, so the answer is Yes.
Sample 2
Input
10 8 3 1 4 1 5 9 2 6 5 3
Output
Yes
Sample 3
Input
10 10 1 3 5 7 9 11 13 15 17 19
Output
No
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