You are given a valid XML document, and you have to print the maximum level of nesting in it. Take the depth of the root as .
The first line contains , the number of lines in the XML document.
The next lines follow containing the XML document.
Output a single line, the integer value of the maximum level of nesting in the XML document.
<subtitle lang='en'>Programming challenges</subtitle>
<link rel='alternate' type='text/html' href='http://hackerrank.com/'/>
Here, the root is a feed tag, which has depth of .
The tags title, subtitle, link and updated all have a depth of .
Thus, the maximum depth is .