{ "data": { "question": { "questionId": "2599", "questionFrontendId": "2516", "boundTopicId": null, "title": "Take K of Each Character From Left and Right", "titleSlug": "take-k-of-each-character-from-left-and-right", "content": "
You are given a string s
consisting of the characters 'a'
, 'b'
, and 'c'
and a non-negative integer k
. Each minute, you may take either the leftmost character of s
, or the rightmost character of s
.
Return the minimum number of minutes needed for you to take at least k
of each character, or return -1
if it is not possible to take k
of each character.
\n
Example 1:
\n\n\nInput: s = "aabaaaacaabc", k = 2\nOutput: 8\nExplanation: \nTake three characters from the left of s. You now have two 'a' characters, and one 'b' character.\nTake five characters from the right of s. You now have four 'a' characters, two 'b' characters, and two 'c' characters.\nA total of 3 + 5 = 8 minutes is needed.\nIt can be proven that 8 is the minimum number of minutes needed.\n\n\n
Example 2:
\n\n\nInput: s = "a", k = 1\nOutput: -1\nExplanation: It is not possible to take one 'b' or 'c' so return -1.\n\n\n
\n
Constraints:
\n\n1 <= s.length <= 105
s
consists of only the letters 'a'
, 'b'
, and 'c'
.0 <= k <= s.length
Compiled with clang 11
using the latest C++ 17 standard.
Your code is compiled with level two optimization (-O2
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Most standard library headers are already included automatically for your convenience.
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Python 2.7.12
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\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
\\r\\n\\r\\nNote that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.
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\\r\\n\\r\\nFor hash table operations, you may use uthash. \\\"uthash.h\\\" is included by default. Below are some examples:
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Node.js 16.13.2
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Go 1.17.6
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Support https://godoc.org/github.com/emirpasic/gods library.
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