USACO 2016 December Contest, Bronze
Problem 3. The Cow-Signal
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Bessie and her cow friends are playing as their favorite cow superheroes. Of
course, everyone knows that any self-respecting superhero needs a signal to call
them to action. Bessie has drawn a special signal on a sheet of $M \times N$
paper ($1 \leq M \leq 10, 1 \leq N \leq 10$), but this is too small, much too
small! Bessie wants to amplify the signal so it is exactly $K$ times bigger
($1 \leq K \leq 10$) in each direction.
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The signal will consist only of the '.' and 'X' characters.
INPUT FORMAT (file cowsignal.in):
The first line of input contains $M$, $N$, and $K$, separated by spaces.The next $M$ lines each contain a length-$N$ string, collectively describing the picture of the signal.
OUTPUT FORMAT (file cowsignal.out):
You should output $KM$ lines, each with $KN$ characters, giving a picture of the enlarged signal.SAMPLE INPUT:
5 4 2 XXX. X..X XXX. X..X XXX.
SAMPLE OUTPUT:
XXXXXX.. XXXXXX.. XX....XX XX....XX XXXXXX.. XXXXXX.. XX....XX XX....XX XXXXXX.. XXXXXX..
Problem credits: Nathan Pinsker