Distinct ways

Problem Statement

Distinct ways Problem Description You are given two strings, S and R. Your task is to determine how many distinct ways the string R can be formed using only the characters from the substring of S. Since the number of ways can be very large, print the result modulo 998244353. Complete the function solve() provided in the editor. This function takes the following 7 parameters and returns the required answer. N: Represents the length of string S. M: Represents the length of string R. S: Represents the string S. R: Represents the string R. Q: Represents the number of queries. X: Represents the starting position of substrings for each of the Q queries. Y: Represents the ending position of substrings for each of the Q queries. Notes A substring is a contiguous block of characters from a string. To create a string from a substring of S: You may choose any subset of character positions within the substring. You may rearrange the chosen characters in any order to form R. Two ways are considered