* You are given two 0-indexed strings str1 and str2. * In an operation, you select a set of indices in str1, and for each index i * in the set, increment str1[i] to the next character cyclically. That ...

We say that a string contains the word hackerrank if a subsequence of its characters spell the word hackerrank. Remeber that a subsequence maintains the order of characters selected from a sequence.