DWITE Contest

Test Case for Question #1 in DWITE 2008-2009 High School Round 1

Contest: DWITE 2008-2009 High School Round 1
Question: #1
Input File: DATA1.txt
Output File: OUT1.txt


Input

4
0
3
2
1




Output

.................
...x.............
..xxx.....x......
.xxxxx...xxx..x..
xxxxxxx.xxxxxxxxx