{ "data": { "question": { "questionId": "2511", "questionFrontendId": "2522", "boundTopicId": null, "title": "Partition String Into Substrings With Values at Most K", "titleSlug": "partition-string-into-substrings-with-values-at-most-k", "content": "
You are given a string s
consisting of digits from 1
to 9
and an integer k
.
A partition of a string s
is called good if:
s
is part of exactly one substring.k
.Return the minimum number of substrings in a good partition of s
. If no good partition of s
exists, return -1
.
Note that:
\n\n"123"
is 123
and the value of "1"
is 1
.\n
Example 1:
\n\n\nInput: s = "165462", k = 60\nOutput: 4\nExplanation: We can partition the string into substrings "16", "54", "6", and "2". Each substring has a value less than or equal to k = 60.\nIt can be shown that we cannot partition the string into less than 4 substrings.\n\n\n
Example 2:
\n\n\nInput: s = "238182", k = 5\nOutput: -1\nExplanation: There is no good partition for this string.\n\n\n
\n
Constraints:
\n\n1 <= s.length <= 105
s[i]
is a digit from '1'
to '9'
.1 <= k <= 109
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