CF1512B.Almost Rectangle

普及/提高-

通过率:0%

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题目描述

There is a square field of size n×nn \times n in which two cells are marked. These cells can be in the same row or column.

You are to mark two more cells so that they are the corners of a rectangle with sides parallel to the coordinate axes.

For example, if n=4n=4 and a rectangular field looks like this (there are asterisks in the marked cells):

..............\begin{matrix} .&.&*&.\\ .&.&.&.\\ *&.&.&.\\ .&.&.&.\\ \end{matrix}

Then you can mark two more cells as follows

............\begin{matrix} *&.&*&.\\ .&.&.&.\\ *&.&*&.\\ .&.&.&.\\ \end{matrix}

If there are several possible solutions, then print any of them.

输入格式

The first line contains a single integer tt ( 1t4001 \le t \le 400 ). Then tt test cases follow.

The first row of each test case contains a single integer nn ( 2n4002 \le n \le 400 ) — the number of rows and columns in the table.

The following nn lines each contain nn characters '.' or '*' denoting empty and marked cells, respectively.

It is guaranteed that the sums of nn for all test cases do not exceed 400400 .

It is guaranteed that there are exactly two asterisks on the field. They can be in the same row/column.

It is guaranteed that the solution exists.

输出格式

For each test case, output nn rows of nn characters — a field with four asterisks marked corresponding to the statements. If there multiple correct answers, print any of them.

输入输出样例

  • 输入#1

    6
    4
    ..*.
    ....
    *...
    ....
    2
    *.
    .*
    2
    .*
    .*
    3
    *.*
    ...
    ...
    5
    .....
    ..*..
    .....
    .*...
    .....
    4
    ....
    ....
    *...
    *...

    输出#1

    *.*.
    ....
    *.*.
    ....
    **
    **
    **
    **
    *.*
    *.*
    ...
    .....
    .**..
    .....
    .**..
    .....
    ....
    ....
    **..
    **..
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