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 * 105
word
consists only of lowercase English letters.0 <= k <= word.length - 5