Problem Description
A checkerboard of size n is depicted as below:
n = 1
o
n = 2
ox
xo
n = 3
oxo
xox
oxo
n = 4
oxox
xoxo
oxox
xoxo
n = 5
oxoxo
xoxox
oxoxo
xoxox
oxoxo
Your task is to print the checkerboard given the size of the checkboard, n
Input
A single integer, n, where n will not exceed 50.
Output
The checkboard, refer to example above
Sample Input
7
Sample Output
oxoxoxo
xoxoxox
oxoxoxo
xoxoxox
oxoxoxo
xoxoxox
oxoxoxo