CF1618E.Singers' Tour

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

nn towns are arranged in a circle sequentially. The towns are numbered from 11 to nn in clockwise order. In the ii -th town, there lives a singer with a repertoire of aia_i minutes for each i[1,n]i \in [1, n] .

Each singer visited all nn towns in clockwise order, starting with the town he lives in, and gave exactly one concert in each town. In addition, in each town, the ii -th singer got inspired and came up with a song that lasts aia_i minutes. The song was added to his repertoire so that he could perform it in the rest of the cities.

Hence, for the ii -th singer, the concert in the ii -th town will last aia_i minutes, in the (i+1)(i + 1) -th town the concert will last 2ai2 \cdot a_i minutes, ..., in the ((i+k)modn+1)((i + k) \bmod n + 1) -th town the duration of the concert will be (k+2)ai(k + 2) \cdot a_i , ..., in the town ((i+n2)modn+1)((i + n - 2) \bmod n + 1)nain \cdot a_i minutes.

You are given an array of bb integer numbers, where bib_i is the total duration of concerts in the ii -th town. Reconstruct any correct sequence of positive integers aa or say that it is impossible.

输入格式

The first line contains one integer tt (1t103(1 \le t \le 10^3 ) — the number of test cases. Then the test cases follow.

Each test case consists of two lines. The first line contains a single integer nn ( 1n41041 \le n \le 4 \cdot 10^4 ) — the number of cities. The second line contains nn integers b1,b2,,bnb_1, b_2, \dots, b_n ( 1bi1091 \le b_i \le 10^{9} ) — the total duration of concerts in ii -th city.

The sum of nn over all test cases does not exceed 21052 \cdot 10^5 .

输出格式

For each test case, print the answer as follows:

If there is no suitable sequence aa , print NO. Otherwise, on the first line print YES, on the next line print the sequence a1,a2,,ana_1, a_2, \dots, a_n of nn integers, where aia_i ( 1ai1091 \le a_i \le 10^{9} ) is the initial duration of repertoire of the ii -th singer. If there are multiple answers, print any of them.

输入输出样例

  • 输入#1

    4
    3
    12 16 14
    1
    1
    3
    1 2 3
    6
    81 75 75 93 93 87

    输出#1

    YES
    3 1 3 
    YES
    1 
    NO
    YES
    5 5 4 1 4 5

说明/提示

Let's consider the 11 -st test case of the example:

  1. the 11 -st singer in the 11 -st city will give a concert for 33 minutes, in the 22 -nd — for 66 minutes, in the 33 -rd — for 99 minutes;
  2. the 22 -nd singer in the 11 -st city will give a concert for 33 minutes, in the 22 -nd — for 11 minute, in the 33 -rd - for 22 minutes;
  3. the 33 -rd singer in the 11 -st city will give a concert for 66 minutes, in the 22 -nd — for 99 minutes, in the 33 -rd — for 33 minutes.
首页