cpp-flashcards/org/study_deck_02/dsa/sliding-window/3306-count-of-substrings-containing-every-vowel-and-k-consonants-ii.org

#+PROPERTY: STUDY_DECK_02
* TODO 3306. Count of Substrings Containing Every Vowel and K Consonants II :medium:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*3306. Count of Substrings Containing Every Vowel and K Consonants II][3306. Count of Substrings Containing Every Vowel and K Consonants II]]
:END:

You are given a string ~word~ and a *non-negative* integer ~k~.

Return the total number of substrings of ~word~ that contain every vowel (~'a'~, ~'e'~, ~'i'~, ~'o'~, and ~'u'~) *at least* once and *exactly* ~k~ consonants.

*Example 1:*

*Input:* word = "aeioqq", k = 1

*Output:* 0

*Explanation:*

There is no substring with every vowel.

*Example 2:*

*Input:* word = "aeiou", k = 0

*Output:* 1

*Explanation:*

The only substring with every vowel and zero consonants is ~word[0..4]~, which is ~"aeiou"~.

*Example 3:*

*Input:* word = "ieaouqqieaouqq", k = 1

*Output:* 3

*Explanation:*

The substrings with every vowel and one consonant are:

 - ~word[0..5]~, which is ~"ieaouq"~.

 - ~word[6..11]~, which is ~"qieaou"~.

 - ~word[7..12]~, which is ~"ieaouq"~.

*Constraints:*

 - ~5 <= word.length <= 2 * 10^{5}~

 - ~word~ consists only of lowercase English letters.

 - ~0 <= k <= word.length - 5~

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def countOfSubstrings(self, word: str, k: int) -> int:
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    long long countOfSubstrings(string word, int k) {
        
    }
};
#+end_src