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Determine whether a given string contains only lowercase Latin letters and find the maximum frequency of any character.
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Problem Statement
You are given a string. Count how many times each character appears, then report the largest frequency among all characters.
This kind of task is often used as a small warm-up on scanning a string and maintaining counts efficiently.
Input Format
- A single string .
- The string consists of lowercase Latin letters.
Output Format
- Output one integer: the maximum number of occurrences of any character in .
Constraints
- contains only lowercase English letters.
Examples
Sample cases returned by the problem API.
Example 1
Input
abacaba
Output
4
Explanation
The character 'a' appears 4 times, which is the highest frequency.
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