# 1896. Minimum Cost to Change the Final Value of Expression

https://leetcode.com/problems/minimum-cost-to-change-the-final-value-of-expression

## Description

You are given a **valid** boolean expression as a string `expression` consisting of the characters `'1'`,`'0'`,`'&'` (bitwise **AND** operator),`'|'` (bitwise **OR** operator),`'('`, and `')'`.

* For example, `"()1|1"` and `"(1)&()"` are **not valid** while `"1"`, `"(((1))|(0))"`, and `"1|(0&(1))"` are **valid** expressions.

Return _the **minimum cost** to change the final value of the expression_.

* For example, if `expression = "1|1|(0&0)&1"`, its **value** is `1|1|(0&0)&1 = 1|1|0&1 = 1|0&1 = 1&1 = 1`. We want to apply operations so that the **new** expression evaluates to `0`.

The **cost** of changing the final value of an expression is the **number of operations** performed on the expression. The types of **operations** are described as follows:

* Turn a `'1'` into a `'0'`.
* Turn a `'0'` into a `'1'`.
* Turn a `'&'` into a `'|'`.
* Turn a `'|'` into a `'&'`.

**Note:** `'&'` does **not** take precedence over `'|'` in the **order of calculation**. Evaluate parentheses **first**, then in **left-to-right** order.

**Example 1:**

```
**Input:** expression = "1&(0|1)"
**Output:** 1
**Explanation:** We can turn "1&(0**|**1)" into "1&(0**&**1)" by changing the '|' to a '&' using 1 operation.
The new expression evaluates to 0. 
```

**Example 2:**

```
**Input:** expression = "(0&0)&(0&0&0)"
**Output:** 3
**Explanation:** We can turn "(0**&0**)**&**(0&0&0)" into "(0**|1**)**|**(0&0&0)" using 3 operations.
The new expression evaluates to 1.
```

**Example 3:**

```
**Input:** expression = "(0|(1|0&1))"
**Output:** 1
**Explanation:** We can turn "(0|(**1**|0&1))" into "(0|(**0**|0&1))" using 1 operation.
The new expression evaluates to 0.
```

**Constraints:**

* `1 <= expression.length <= 105`
* `expression` only contains `'1'`,`'0'`,`'&'`,`'|'`,`'('`, and `')'`
* All parentheses are properly matched.
* There will be no empty parentheses (i.e: `"()"` is not a substring of `expression`).

## ac

```java
```
