Given an `expression`

such as `expression = "e + 8 - a + 5"`

and an evaluation map such as `{"e": 1}`

(given in terms of `evalvars = ["e"]`

and `evalints = [1]`

), return a list of tokens representing the simplified expression, such as `["-1*a","14"]`

- An expression alternates chunks and symbols, with a space separating each chunk and symbol.
- A chunk is either an expression in parentheses, a variable, or a non-negative integer.
- A variable is a string of lowercase letters (not including digits.) Note that variables can be multiple letters, and note that variables never have a leading coefficient or unary operator like
`"2x"`

or `"-x"`

.

Expressions are evaluated in the usual order: brackets first, then multiplication, then addition and subtraction. For example, `expression = "1 + 2 * 3"`

has an answer of `["7"]`

.

The format of the output is as follows:

- For each term of free variables with non-zero coefficient, we write the free variables within a term in sorted order lexicographically. For example, we would never write a term like
`"b*a*c"`

, only `"a*b*c"`

.
- Terms have degree equal to the number of free variables being multiplied, counting multiplicity. (For example,
`"a*a*b*c"`

has degree 4.) We write the largest degree terms of our answer first, breaking ties by lexicographic order ignoring the leading coefficient of the term.
- The leading coefficient of the term is placed directly to the left with an asterisk separating it from the variables (if they exist.) A leading coefficient of 1 is still printed.
- An example of a well formatted answer is
`["-2*a*a*a", "3*a*a*b", "3*b*b", "4*a", "5*c", "-6"]`

- Terms (including constant terms) with coefficient 0 are not included. For example, an expression of "0" has an output of [].

**Examples:**

**Input:** expression = "e + 8 - a + 5", evalvars = ["e"], evalints = [1]
**Output:** ["-1*a","14"]
**Input:** expression = "e - 8 + temperature - pressure",
evalvars = ["e", "temperature"], evalints = [1, 12]
**Output:** ["-1*pressure","5"]
**Input:** expression = "(e + 8) * (e - 8)", evalvars = [], evalints = []
**Output:** ["1*e*e","-64"]
**Input:** expression = "7 - 7", evalvars = [], evalints = []
**Output:** []
**Input:** expression = "a * b * c + b * a * c * 4", evalvars = [], evalints = []
**Output:** ["5*a*b*c"]
**Input:** expression = "((a - b) * (b - c) + (c - a)) * ((a - b) + (b - c) * (c - a))",
evalvars = [], evalints = []
**Output:** ["-1*a*a*b*b","2*a*a*b*c","-1*a*a*c*c","1*a*b*b*b","-1*a*b*b*c","-1*a*b*c*c","1*a*c*c*c","-1*b*b*b*c","2*b*b*c*c","-1*b*c*c*c","2*a*a*b","-2*a*a*c","-2*a*b*b","2*a*c*c","1*b*b*b","-1*b*b*c","1*b*c*c","-1*c*c*c","-1*a*a","1*a*b","1*a*c","-1*b*c"]

**Note:**

`expression`

will have length in range `[1, 250]`

.
`evalvars, evalints`

will have equal lengths in range `[0, 100]`

.