Editorial for WC '18 Contest 3 J3 - R
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
We'll go row by row from top to bottom, determining and outputting each one as we go.
The first row consists of
#'s followed by one ..
The next rows each consist of one
#, followed by
.'s, followed by one #.
The next row is the same as the first row.
Finally, rows remain. The
-th of these contains a
# in column and another in column
. In other words, it consists of one
#, followed by
.'s, followed by one #, followed by
.'s.
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