题号：NC237349
时间限制：C/C++/Rust/Pascal 1秒，其他语言2秒
空间限制：C/C++/Rust/Pascal 256 M，其他语言512 M
64bit IO Format: %lld
时间限制：C/C++/Rust/Pascal 1秒，其他语言2秒
空间限制：C/C++/Rust/Pascal 256 M，其他语言512 M
64bit IO Format: %lld
题目描述
Define the value of a string as the number of occurrences of the character with the most occurrences minus the number of occurrences of the character with the least occurrences in the string.
Now give you a string , ask what is the maximum value of all nonempty substrings of
(a substring is a contiguous sequence of characters within a string).
输入描述:
A line contains a stringcontaining only lowercase letters. (
).
输出描述:
Output an integer on a line, indicating the answer.