﻿ ABC250 B - Enlarged Checker Board - Atcoder

# Home

Score : $200$ points

### Problem Statement

Tiles are aligned in $N$ horizontal rows and $N$ vertical columns. Each tile has a grid with $A$ horizontal rows and $B$ vertical columns. On the whole, the tiles form a grid $X$ with $(A\times N)$ horizontal rows and $(B\times N)$ vertical columns.
For $1\leq i,j \leq N$, Tile $(i,j)$ denotes the tile at the $i$-th row from the top and the $j$-th column from the left.

Each square of $X$ is painted as follows.

• Each tile is either a white tile or a black tile.
• Every square in a white tile is painted white; every square in a black tile is painted black.
• Tile $(1,1)$ is a white tile.
• Two tiles sharing a side have different colors. Here, Tile $(a,b)$ and Tile $(c,d)$ are said to be sharing a side if and only if $|a-c|+|b-d|=1$ (where $|x|$ denotes the absolute value of $x$).

Print the grid $X$ in the format specified in the Output section.

### Constraints

• $1 \leq N,A,B \leq 10$
• All values in input are integers.

### Input

Input is given from Standard Input in the following format:

$N$ $A$ $B$


### Output

Print $(A\times N)$ strings $S_1,\ldots,S_{A\times N}$ that satisfy the following condition, with newlines in between.

• Each of $S_1,\ldots,S_{A\times N}$ is a string of length $(B\times N)$ consisting of . and #.
• For each $i$ and $j$ $(1 \leq i \leq A\times N,1 \leq j \leq B\times N)$, the $j$-th character of $S_i$ is . if the square at the $i$-th row from the top and $j$-th column from the left in grid $X$ is painted white; the character is # if the square is painted black.

### Sample Input 1

4 3 2


### Sample Output 1

..##..##
..##..##
..##..##
##..##..
##..##..
##..##..
..##..##
..##..##
..##..##
##..##..
##..##..
##..##..


### Sample Input 2

5 1 5


### Sample Output 2

.....#####.....#####.....
#####.....#####.....#####
.....#####.....#####.....
#####.....#####.....#####
.....#####.....#####.....


### Sample Input 3

4 4 1


### Sample Output 3

.#.#
.#.#
.#.#
.#.#
#.#.
#.#.
#.#.
#.#.
.#.#
.#.#
.#.#
.#.#
#.#.
#.#.
#.#.
#.#.


### Sample Input 4

1 4 4


### Sample Output 4

....
....
....
....