Pani Puri

A Pani Puri shop is conducting a contest: Given a few chaat items’ names and a set of queries where each query is of the form ($l,r$).Take the substring of the chaat item’s name say $s$ ($s[l], s[l+1],...,s[r]$) ]) and if $s[i]\lt s[i-1]$ then one Pani Puri will be added into your account.At the end, you’ll be awarded with the number of Pani Puris you have acquired. By default, if the substring in