题目描述
There is an image with a height of H pixels and a width of W pixels. Each of the pixels is represented by either . or *. The character representing the pixel at the i-th row from the top and the j-th column from the left, is denoted by C_{i,j}.
Extend this image vertically so that its height is doubled. That is, print a image with a height of 2H pixels and a width of W pixels where the pixel at the i-th row and j-th column is equal to C_{(i+1)/2,j} (the result of division is rounded down).
-----Constraints-----
- 1≦H, W≦100
- C_{i,j} is either . or *.
-----Input-----
The input is given from Standard Input in the following format:
H W
C_{1,1}...C_{1,W}
:
C_{H,1}...C_{H,W}
-----Output-----
Print the extended image.
-----Sample Input-----
2 2
.
.
-----Sample Output-----
.
.
.
.
输入格式
见题面
输出格式
见题面