DWITE Online Computer Programming Contest
November 2008
Problem 2
My favourite digit

Simply speaking, you need to know how to handle your numbers well. Given an integer, what is the largest digit present in that number?

The input file DATA2.txt will contain 5 lines, integers 0 <= N <= 1,000,000.

The output file OUT2.txt will contain 5 lines, each being a single integer 0 <= n <= 9 -- the largest digit present in the corresponding input number.

Sample Input:
1
10
102
1025
9999
		        
Sample Output:
1
1
2
5
9