ASCII Art#11607
You are given a matrix of size h \times w consisting of integers from to . The element located in the -th row from the top and the -th column from the left is denoted by A_{i,j}.
Let s_1, s_2, \ldots, s_h be strings of length , defined as follows:
The -th character of the string s_i is a dot (.), if A_{i,j} = 0.
Otherwise, it is the A_{i,j}-th uppercase letter of the English alphabet (for example, the -th letter is ).
Print the strings s_1, s_2, \ldots, s_h, one per line.
The first line contains two integers and — the height and width of the matrix .
The next lines contain integers each — the elements of the matrix .
Print lines. In the -th line print the string s_i.
Example 1
Example 2