You have a string and queries of two types:

1. replace i’th character of the string by character a;
2. check if substring s_j...s_k is a palindrome.

The first line contains a string consisting of n small English letters. The second line contains an integer m that is the number of queries (5 ≤ n, m ≤ 10⁵). The next m lines contain the queries.
Each query has either form “change i a”, or “palindrome? j k”, where i, j, k are integers (1 ≤ i ≤ n; 1 ≤ j ≤ k ≤ n), and character a is a small English letter.

To all second type queries, you should output “Yes” on a single line if substring s_j...s_k is a palindrome and “No” otherwise.