CF1375B.Neighbor Grid

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

You are given a grid with nn rows and mm columns, where each cell has a non-negative integer written on it. We say the grid is good if for each cell the following condition holds: if it has a number k>0k > 0 written on it, then exactly kk of its neighboring cells have a number greater than 00 written on them. Note that if the number in the cell is 00 , there is no such restriction on neighboring cells.

You are allowed to take any number in the grid and increase it by 11 . You may apply this operation as many times as you want, to any numbers you want. Perform some operations (possibly zero) to make the grid good, or say that it is impossible. If there are multiple possible answers, you may find any of them.

Two cells are considered to be neighboring if they have a common edge.

输入格式

The input consists of multiple test cases. The first line contains an integer tt ( 1t50001 \le t \le 5000 ) — the number of test cases. The description of the test cases follows.

The first line of each test case contains two integers nn and mm ( 2n,m3002 \le n, m \le 300 ) — the number of rows and columns, respectively.

The following nn lines contain mm integers each, the jj -th element in the ii -th line ai,ja_{i, j} is the number written in the jj -th cell of the ii -th row ( 0ai,j1090 \le a_{i, j} \le 10^9 ).

It is guaranteed that the sum of nmn \cdot m over all test cases does not exceed 10510^5 .

输出格式

If it is impossible to obtain a good grid, print a single line containing "NO".

Otherwise, print a single line containing "YES", followed by nn lines each containing mm integers, which describe the final state of the grid. This final grid should be obtainable from the initial one by applying some operations (possibly zero).

If there are multiple possible answers, you may print any of them.

输入输出样例

  • 输入#1

    5
    3 4
    0 0 0 0
    0 1 0 0
    0 0 0 0
    2 2
    3 0
    0 0
    2 2
    0 0
    0 0
    2 3
    0 0 0
    0 4 0
    4 4
    0 0 0 0
    0 2 0 1
    0 0 0 0
    0 0 0 0

    输出#1

    YES
    0 0 0 0
    0 1 1 0
    0 0 0 0
    NO
    YES
    0 0
    0 0
    NO
    YES
    0 1 0 0
    1 4 2 1
    0 2 0 0
    1 3 1 0

说明/提示

In the first test case, we can obtain the resulting grid by increasing the number in row 22 , column 33 once. Both of the cells that contain 11 have exactly one neighbor that is greater than zero, so the grid is good. Many other solutions exist, such as the grid

$$0\;1\;0\;0 $$ $$ 0\;2\;1\;0 $$ $$ 0\;0\;0\;0 $$$$ All of them are accepted as valid answers. In the second test case, it is impossible to make the grid good. In the third test case, notice that no cell has a number greater than zero on it, so the grid is automatically good.
首页