Minority

题意翻译

- 给定一个 $01$ 字符串 $s$，定义 $c_k(l,r)$ 表示 $s$ 的由下标为 $[l,r]$ 中的字母构成的连续子串中 $k$ 的个数。 - 定义 $f(l,r)=\begin{cases}c_0(l,r)&c_0(l,r)<c_1(l,r)\\c_1(l,r)&c_0(l,r)>c_1(l,r)\\0&c_0(l,r)=c_1(l,r)\end{cases}$，求 $\max\limits_{1\le l\le r\le n}f(l,r)$。多组询问。 - $T\le10^4,\sum|s|\le2\times10^5$

题目描述

You are given a string $ s $ , consisting only of characters '0' and '1'. You have to choose a contiguous substring of $ s $ and remove all occurrences of the character, which is a strict minority in it, from the substring. That is, if the amount of '0's in the substring is strictly smaller than the amount of '1's, remove all occurrences of '0' from the substring. If the amount of '1's is strictly smaller than the amount of '0's, remove all occurrences of '1'. If the amounts are the same, do nothing. You have to apply the operation exactly once. What is the maximum amount of characters that can be removed?

输入输出格式

输入格式

The first line contains a single integer $ t $ ( $ 1 \le t \le 10^4 $ ) — the number of testcases. The only line of each testcase contains a non-empty string $ s $ , consisting only of characters '0' and '1'. The length of $ s $ doesn't exceed $ 2 \cdot 10^5 $ . The total length of strings $ s $ over all testcases doesn't exceed $ 2 \cdot 10^5 $ .

输出格式

For each testcase, print a single integer — the maximum amount of characters that can be removed after applying the operation exactly once.

输入输出样例

输入样例 #1

4
01
1010101010111
00110001000
1

输出样例 #1

0
5
3
0

说明

In the first testcase, you can choose substrings "0", "1" or "01". In "0" the amount of '0' is $ 1 $ , the amount of '1' is $ 0 $ . '1' is a strict minority, thus all occurrences of it are removed from the substring. However, since there were $ 0 $ of them, nothing changes. Same for "1". And in "01" neither of '0' or '1' is a strict minority. Thus, nothing changes. So there is no way to remove any characters. In the second testcase, you can choose substring "10101010101". It contains $ 5 $ characters '0' and $ 6 $ characters '1'. '0' is a strict minority. Thus, you can remove all its occurrences. There exist other substrings that produce the same answer. In the third testcase, you can choose substring "011000100". It contains $ 6 $ characters '0' and $ 3 $ characters '1'. '1' is a strict minority. Thus, you can remove all its occurrences.