Codeforces Round 937 (Div. 4) |
---|
Finished |
You are given an integer $$$n$$$. Output a $$$2n \times 2n$$$ checkerboard made of $$$2 \times 2$$$ squares alternating '$$$\texttt{#}$$$' and '$$$\texttt{.}$$$', with the top-left cell being '$$$\texttt{#}$$$'.
The picture above shows the answers for $$$n=1,2,3,4$$$.
The first line contains an integer $$$t$$$ ($$$1 \leq t \leq 20$$$) — the number of test cases.
The only line of each test case contains a single integer $$$n$$$ ($$$1 \leq n \leq 20$$$) — it means you need to output a checkerboard of side length $$$2n$$$.
For each test case, output $$$2n$$$ lines, each containing $$$2n$$$ characters without spaces — the checkerboard, as described in the statement. Do not output empty lines between test cases.
41234
## ## ##.. ##.. ..## ..## ##..## ##..## ..##.. ..##.. ##..## ##..## ##..##.. ##..##.. ..##..## ..##..## ##..##.. ##..##.. ..##..## ..##..##
Name |
---|