CF634A.Island Puzzle

普及/提高-

通过率:0%

AC君温馨提醒

该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。

题目描述

A remote island chain contains nn islands, labeled 11 through nn . Bidirectional bridges connect the islands to form a simple cycle — a bridge connects islands 11 and 22 , islands 22 and 33 , and so on, and additionally a bridge connects islands nn and 11 . The center of each island contains an identical pedestal, and all but one of the islands has a fragile, uniquely colored statue currently held on the pedestal. The remaining island holds only an empty pedestal.

The islanders want to rearrange the statues in a new order. To do this, they repeat the following process: First, they choose an island directly adjacent to the island containing an empty pedestal. Then, they painstakingly carry the statue on this island across the adjoining bridge and place it on the empty pedestal.

Determine if it is possible for the islanders to arrange the statues in the desired order.

输入格式

The first line contains a single integer nn ( 2<=n<=2000002<=n<=200000 ) — the total number of islands.

The second line contains nn space-separated integers aia_{i} ( 0<=ai<=n10<=a_{i}<=n-1 ) — the statue currently placed on the ii -th island. If ai=0a_{i}=0 , then the island has no statue. It is guaranteed that the aia_{i} are distinct.

The third line contains nn space-separated integers bib_{i} ( 0<=bi<=n10<=b_{i}<=n-1 ) — the desired statues of the ii th island. Once again, bi=0b_{i}=0 indicates the island desires no statue. It is guaranteed that the bib_{i} are distinct.

输出格式

Print "YES" (without quotes) if the rearrangement can be done in the existing network, and "NO" otherwise.

输入输出样例

  • 输入#1

    3
    1 0 2
    2 0 1
    

    输出#1

    YES
    
  • 输入#2

    2
    1 0
    0 1
    

    输出#2

    YES
    
  • 输入#3

    4
    1 2 3 0
    0 3 2 1
    

    输出#3

    NO
    

说明/提示

In the first sample, the islanders can first move statue 11 from island 11 to island 22 , then move statue 22 from island 33 to island 11 , and finally move statue 11 from island 22 to island 33 .

In the second sample, the islanders can simply move statue 11 from island 11 to island 22 .

In the third sample, no sequence of movements results in the desired position.

首页