308269: CF1491D. Zookeeper and The Infinite Zoo
Memory Limit:256 MB
Time Limit:3 S
Judge Style:Text Compare
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Description
Zookeeper and The Infinite Zoo
题意翻译
## 题目描述 有一个无限图,其中有无数个节点,从 $1$ 开始标号。有一条从 $u$ 到 $u+v$ 的单向边,当且仅当 $u \& v = v$ (这里的 $\&$ 指 [按位与](https://zh.wikipedia.org/wiki/位操作#按位与(AND)) 。除此以外没有其它边。 有 $q$ 个询问,询问是否存在一条从 $u$ 到 $v$ 的路径。 ## 输入格式 第一行一个整数 $q$ ($1\le q\le10^5 $) —— 询问的个数 接下来 $q$ 行中,每行有两个整数 $u,v$ ($1 \leq u,v < 2^{30}$),意义如上 ## 输出格式 对于每个询问,输出一行 `YES` 来表示存在从 $u$ 到 $v$ 的一条路径,或输出一行 `NO` 表示不存在这样一条路径。(你可以以任意大小写形式来输出 `YES` 或 `NO`)题目描述
There is a new attraction in Singapore Zoo: The Infinite Zoo. The Infinite Zoo can be represented by a graph with an infinite number of vertices labeled $ 1,2,3,\ldots $ . There is a directed edge from vertex $ u $ to vertex $ u+v $ if and only if $ u\&v=v $ , where $ \& $ denotes the [bitwise AND operation](https://en.wikipedia.org/wiki/Bitwise_operation#AND). There are no other edges in the graph. Zookeeper has $ q $ queries. In the $ i $ -th query she will ask you if she can travel from vertex $ u_i $ to vertex $ v_i $ by going through directed edges.输入输出格式
输入格式
The first line contains an integer $ q $ ( $ 1 \leq q \leq 10^5 $ ) — the number of queries. The $ i $ -th of the next $ q $ lines will contain two integers $ u_i $ , $ v_i $ ( $ 1 \leq u_i, v_i < 2^{30} $ ) — a query made by Zookeeper.
输出格式
For the $ i $ -th of the $ q $ queries, output "YES" in a single line if Zookeeper can travel from vertex $ u_i $ to vertex $ v_i $ . Otherwise, output "NO". You can print your answer in any case. For example, if the answer is "YES", then the output "Yes" or "yeS" will also be considered as correct answer.
输入输出样例
输入样例 #1
5
1 4
3 6
1 6
6 2
5 5
输出样例 #1
YES
YES
NO
NO
YES