package aoc

import org.assertj.core.api.Assertions.assertThat
import org.junit.Test
import java.util.*

class Day18OperationOrder {
    @Test
    fun noParantheses() {
        assertThat(evaluate("2 * 3 + 4 * 5 ")).isEqualTo(50)
    }

    @Test
    fun silverTest() {
        assertThat(evaluate("2 * 3 + (4 * 5) ")).isEqualTo(26)
        assertThat(evaluate("5 + (8 * 3 + 9 + 3 * 4 * 3) ")).isEqualTo(437)
        assertThat(evaluate("5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4)) ")).isEqualTo(12240)
        assertThat(evaluate("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2 ")).isEqualTo(13632)
    }

    @Test
    fun silver() {
        val sum = testInput.lines()
            .map { evaluate(it) }
            .sum()

        assertThat(sum).isEqualTo(209335026987L)
    }

    data class Calculation(
        var acc: Long = 0,
        var op: String = "+",
    )

    private fun evaluate(s: String): Long {
        val tokenizer = StringTokenizer(s.replace(" ", ""), "+*()", true)
        val stack = mutableListOf(Calculation())
        fun addOrMultiply(value: Long) {
            when (stack.last().op) {
                "+" -> stack.last().acc += value
                "*" -> stack.last().acc *= value
            }
        }
        while (tokenizer.hasMoreTokens()) {
            val nextToken = tokenizer.nextToken()
            when {
                nextToken == "*" -> stack.last().op = "*"
                nextToken == "+" -> stack.last().op = "+"
                nextToken == "(" -> stack.add(Calculation())
                nextToken == ")" -> {
                    val popped = stack.removeLast()
                    addOrMultiply(popped.acc)
                }
                nextToken.toIntOrNull() != null -> addOrMultiply(nextToken.toLong())
            }
        }
        return stack.last().acc
    }

    @Test
    fun goldTest() {
        assertThat(evaluateAdvancedMath("1 + (2 * 3) + (4 * (5 + 6))")).isEqualTo(51)
        assertThat(evaluateAdvancedMath("2 * 3 + (4 * 5)")).isEqualTo(46)
        assertThat(evaluateAdvancedMath("5 + (8 * 3 + 9 + 3 * 4 * 3)")).isEqualTo(1445)
        assertThat(evaluateAdvancedMath("5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4))")).isEqualTo(669060)
        assertThat(evaluateAdvancedMath("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2 ")).isEqualTo(23340)
    }

    @Test
    fun gold() {
        val sum = testInput.lines()
            .map { evaluateAdvancedMath(it) }
            .sum()

        assertThat(sum).isEqualTo(33331817392479L)
    }

    sealed class Exp {
        class Calc : Exp() {
            val exp = mutableListOf<Exp>()
        }

        class Num(val value: Long) : Exp()
        class Op(val value: String) : Exp()
    }

    fun Exp.Calc.eval(): Long {
        return exp.joinToString("") {
            when (it) {
                is Exp.Calc -> it.eval().toString()
                is Exp.Op -> it.value
                is Exp.Num -> it.value.toString()
            }
        }
            .split("*")
            .map { toSum -> toSum.split("+").map { it.toLong() }.sum() }
            .reduce(Long::times)
    }

    private fun evaluateAdvancedMath(s: String): Long {
        val stack = tokenizeExpressions(s)
        return stack.last().eval()
    }

    private fun tokenizeExpressions(s: String): MutableList<Exp.Calc> {
        val tokenizer = StringTokenizer(s.replace(" ", ""), "+*()", true)
        val stack = mutableListOf(Exp.Calc())

        while (tokenizer.hasMoreTokens()) {
            val nextToken = tokenizer.nextToken()
            when {
                nextToken == "*" -> stack.last().exp.add(Exp.Op("*"))
                nextToken == "+" -> stack.last().exp.add(Exp.Op("+"))
                nextToken == "(" -> stack.add(Exp.Calc())
                nextToken == ")" -> {
                    val popped = stack.removeLast()
                    stack.last().exp.add(popped)
                }
                nextToken.toIntOrNull() != null -> stack.last().exp.add(Exp.Num(nextToken.toLong()))
            }
        }
        return stack
    }

    private val testInput = """
        4 * 5 + 7 * 2 + 8
        ((3 * 6 + 2) * 7 + (5 * 4 + 6 + 8)) + 2 * 7 * 5
        ((5 + 9) + 6) + 6
        (9 + 3 + 3 + 3) + (2 + (6 * 2 * 3) + 5 * 5) + 3 + (2 * 3 * 6 * 4 * 3 * (7 + 4)) * 6 * 6
        (4 + (3 * 2 * 8 * 4 + 5 * 8)) + 3 * 9
        (3 * 9 * 7 * 6 * 3 + 9) * 9
        8 + 6 + 7 * 2 * 9 * 3
        (6 * 3 * 8 + (7 + 8 * 3)) * 4 * (3 + 3 * 2 * 8 * 8)
        (8 + 2 * (2 + 2)) * 2 * 9 * 7 * 3 * (9 * 4 + 6 * 9 + 2 * 7)
        (4 + 6 * 2 + 8) * 6
        ((3 * 7 * 5) * 3) + 3
        ((5 * 4 * 9 * 5 * 2 + 2) + 5 * 9 * 7 * 9 + 5) * 9 + 9
        7 + 7 * 7 * (4 * (5 + 5 + 9 * 7 * 5) * 3 * 8)
        3 + (7 * 7 * (3 * 2 * 8)) + 7 + 5
        3 * 9 + 5 * 7 + 5 * 6
        5 * 5 * (9 * 4 + (6 + 4)) * 6 + 3 * 8
        2 + (9 * 7 * 5 + 4) + 3 * (2 * 8 * 2 + 7 + (5 * 8 * 4 * 3) + 2)
        2 + (7 + 6 + 4 + 3 * 5 * (7 + 6 * 9 * 3 * 6 + 7))
        (5 + 7 + 3 * (5 * 3 * 4 * 5) + 2 * 2) * 6 + (9 + 4 + (4 + 9 + 2 + 3) + 7 * 4 + (8 + 8)) + 6 + (7 + (5 + 2) + 2 * 8 + 9)
        5 * 4 * 5 + 8 * (4 * 4 * 4)
        2 + 8 + 8
        2 + ((7 + 5 + 8 * 6) * 6 * 8 + 4 + 8) * 6 * 6 + (4 * 8 + 8 + 4 + 5 * 2) + (2 + 8 * 6)
        (3 + (2 * 7) * 6 * 2 + (5 + 7 * 3 * 2 * 4)) + (7 * 7 * 7 + 7 + 6 * 8) + (6 * 2 * (7 + 7 + 8) + 7 * 7) * 2 + 5 + 4
        6 + 9 + 3 * ((2 * 3 * 8 + 6) * 8 * 2 + 6)
        5 + 7 * (5 + 9 + (6 + 7) + 2 * 9 * 9) + 9 + (7 + 6 + (8 * 5) + 9 * 6 * 3) * 2
        ((6 * 3 + 8 * 5) + 8 * (3 + 8 * 7)) * (2 + 9 * 2 * 8 + 3) * 8 * 5 + 3
        8 * 6 + 2 * (7 * (8 * 9 + 7 + 4) + 9)
        6 * (2 + (5 + 6 * 2 * 8) + 4 * (4 + 6)) * ((2 * 7 + 6 + 7 * 6 + 6) * 5 * 5 + (3 * 8 + 9) * 3 * 8)
        8 * 2 * (2 + 4) * 8 * (7 + (4 * 8))
        (4 + 8 * 3 + 4) + (2 * 8 * 9)
        3 + (7 * 6) * 3 + 5 * 4
        4 * (2 * (8 + 3 * 7 * 5 + 7 * 2) + 3 * 5 + 8 + 3)
        (9 * (7 + 8 + 7) * 5) + 8 + 3
        5 * 8 + 8 * 3 * 2 + 4
        (7 * (9 + 8 + 3 + 7 * 4) + 8 * (2 * 5 * 6) * 5 * (4 + 7 * 4 + 9)) * 2 * 8
        8 * 7 * 7 * 8 + ((4 * 9 + 8) * 2 + 4 * 8)
        5 + (4 * 4 * 4 + 4 * (2 + 4 + 4 * 2 * 5 + 9) + 6) + 9 * 5
        8 * 9 + 8 * ((2 + 6 * 8 + 5 + 7) + (7 + 3 + 4) * 7) + (6 + 7 * 3 + (5 + 4 + 3 * 4 + 9) + 7 + 7) * (7 + 9 * 9 * (6 + 9 + 2 * 7) + 7 + 8)
        8 * (4 * 3 + 9 + 8) * 8 * 2 + 9
        (3 * 6 + 6 + 6 + 9) + 6 * 2 + 4 * 2 * 7
        2 + 7 + (2 + (4 + 2 * 3 + 7 + 8 + 3) + 2) * 6
        9 * (6 + 5 * 4 * (6 * 3) + (4 * 7 + 7) + (8 + 6 + 3 + 2 * 6 * 5)) + 4 + ((5 * 4 * 7) + 6 + 7 * (6 + 5 * 9 * 8)) + 4 * 4
        7 * 6 * 3 * 2
        7 * (3 + 8 * 8) + (3 * (7 + 8 * 3) * (8 + 9 * 4 * 9 * 6) + 8 * 7 * 3) * 4
        6 * 5 * 6 * (7 * 7 + 6 * 8) * 3 * 2
        6 * 6 + ((6 * 7 + 4) + 4) + 6
        7 * 8 * 8 + 9 * 9 + (6 * (3 * 6 + 3))
        2 + 5 * (7 + 3 + (5 + 6 + 2 * 4 * 3) + 9 + 4) + 3 + (9 * 2 + 4 + 4 * 9) * (4 + 7 * (4 * 2) * 3 * 9 * 5)
        (8 + 7 * (9 * 6 * 3 + 6)) + (4 + 9 * 6 + 6)
        4 * 6 * 8 * 5 + 8
        3 * ((7 * 5 + 5 + 5) + 5 + 4 * 3 * (2 * 2 + 5 + 5)) * 5
        7 + 5 + 6
        3 + 3 * (7 * 5)
        7 + 2 * (4 * 5 * 7 + 5) * ((8 + 7 * 9) + 3 * 7 + 8) + 4
        8 + ((7 + 8) + (8 * 3 + 7) + (2 * 6 * 7 + 6 * 7 * 7) + 6 + 6) + 8 + 8
        (2 + 8 + (8 * 4) * 6) + (2 * 2 + 8 + 8 * 6)
        9 * 9 * 9 + 4 * 4 * (6 * 6)
        6 * 3 * ((6 + 9 * 7 * 7) * 6 * 5 + 4) * 3
        (3 + 4 * (4 + 8 * 6 + 3 * 2) * 7 * (8 * 4 * 6) * 2) * 2
        3 * 3 * 8 * (8 + 8 * 6 * 7)
        ((9 + 9 * 4) + 3 * 3) * 5 + 2
        8 * 2 + 2 * (3 * 6) * 7 + 5
        9 * 2 * 5 + (2 + (2 * 8) * 2 * 8 * 7 * (7 + 7 + 9 + 5)) + 4
        6 + (7 * 5 + 9) * 3 * 3 * 2 * (4 * 3 + 4 + 9 * (9 * 9 * 4 + 7))
        9 * 4
        2 * (6 + 5 + 2 + 6 + 5 * (3 * 6 * 6 * 8 + 8)) + 6
        ((4 + 7 * 8) + 3 + 6 * 7 + 4 + 8) * 5
        (5 * 8 + 6 + (7 * 5 + 5) + 6 * 9) + 6
        4 * (9 + 8 * 3 * 9 + 6 + 3) * 7 * (8 + 6)
        7 * 8 * 6 * 4 + (4 * 5)
        5 + 2 + (6 + (9 + 9) + 8) * ((5 * 7 * 3 * 7 + 6 * 6) + (8 + 8 * 7 + 8) * 4 + 6) * 5
        (9 + 7 + 4) + 5 * 6 + 7 * (3 * (3 * 6 + 7) + (6 + 8 + 4 + 7 + 4 + 7)) + (6 + (8 * 2 + 2 + 2))
        (4 * (5 * 8 * 9) * (7 * 3) * 9) * 7 + (3 * (5 * 4 * 2 * 7))
        (2 * 5 + (9 * 3 + 8 * 7 * 5 + 3) * 2 * 7 * (4 + 4)) + (4 * 3 + (8 * 4 * 5 + 6) * (9 + 2 + 4 * 3 + 4 * 9) + 9) + (5 + 3) * 6
        2 + 7 * 3 * (7 + 9) + 9
        (9 * (7 + 2 * 8) + 7 * (6 * 5 + 4 * 4 * 8 * 8)) + ((3 + 3) + (3 + 2 * 3 * 5) + 5 + (2 + 4 * 2) * 2 * (5 + 8 * 3 * 3)) + 2
        7 + (8 + 8 * 3 + 3 * 4 * 4) + 9 + (3 * 9 * 5 + (3 * 2 * 5 + 9 * 6 * 8) * 7 * (5 + 8 + 9 * 7 + 4 + 9))
        (6 + 6 * 3 + 3 * 2) + ((4 + 2) + 9 * (2 * 9 + 3 * 4 * 7) * 2 * 8 * (4 * 5 + 6)) * 9 * 8 + 8
        6 + 2
        4 * ((7 * 6 + 3 + 8 + 4 * 2) + (6 * 4 * 3 * 5 + 2 * 5) * 6 + (7 * 4 + 5) + 3) * 9 * 3 * 2
        3 + ((9 * 6 * 3 * 6) * 4 * 8 + 3) * ((4 + 4 + 9) + 8 * 4 * 7 * 9) * 3
        8 * (6 * 8) * (8 + 3 + 6 + 2)
        8 * 3 * (7 * 3 + 2 + 4 + (8 * 3) + 3)
        3 + 4 * 4 + 7 + (6 * (5 * 5 + 9) + 7)
        (7 * (8 + 8 + 5 * 7 * 2 * 7) + 7 + 7 * 4 * 4) * 2 * 2 + 7 * (4 + (6 + 6 + 6) + 5 * 4) * 6
        9 * 4 * (5 + 2 + 5) * 4 + 3
        (8 + 7 + (9 + 3 * 8 + 4)) + 9
        8 + (6 * 8 * 8 * 8 + 6 * 7) + (7 * 5 * (3 + 7 + 4 * 4 + 2))
        6 + 7 * (3 * 9 + 5 * 6) + (9 * 9) + 5
        3 * 4 * (7 + 8 * 8 * 7) + 2 + 7
        (5 * 6 * 6) + 4 + 2
        (9 + 3 * 8) + 2 * 8 * ((3 + 9 * 6 * 2 + 7) + 7)
        7 * (9 + (2 * 2 + 5 * 3) * 9 * (5 * 6 + 4 + 6 * 7)) * 9 * 9 + 9 + 2
        ((3 * 6 + 6 + 7) + 4 + (2 * 4 * 7 * 6) + 9) + 2 + 3
        7 * 9 + 6 + 5 * (9 * (6 * 9 + 4 * 3 * 3 * 7) + 9)
        3 + (6 + 4 * 3 * 6 * (3 + 6)) * 9
        (2 * 5 + 6) * 2 * (5 + (7 * 6 + 3 + 9 + 2)) + 7 * 3
        5 * (9 + 4 * 7 * 4 + 5) * 4
        4 + 9 * (6 * 5 * 7 * 4 * 2) * ((2 + 4 * 3) * 8 * (4 * 6 + 5 + 4 + 2))
        8 + 7
        2 * 9 * (7 * 4 + 4 + 2 + 4 * 4) * 9
        (2 * 3 * 4 * 2) * (5 * 3 * 3 + 3 + 3 + 7) * (2 * 5 + 4 + 3 * 2) * 3
        6 * 4 + (6 + 5 * 4 + 9) + ((7 + 7 * 6 + 3) * 2 + (6 * 8 * 5)) * ((4 * 2) * 5 * 6 * 3 * (6 + 3 * 8) + 3)
        (9 + 4 * 3 * 8) * ((2 * 9 + 2 * 5 + 7 + 3) * 9 + 7 * 2 * 3)
        9 + 9 + 5 * ((4 * 3 * 6 * 4 + 4) + 2 + 2 + 4) + 7
        8 * 6 + 8 * 9 * (5 + 7 + 8 + 9 * 5)
        2 + 3 * 6 * 8 * 4 * (7 * 4 * (2 + 9 * 3 + 7 + 7) + 5)
        (6 + 6 * 5) + 7 + 9 * (3 * 6 + 6 + (5 * 5 + 3 + 5 + 4 * 9)) + 5
        7 * (2 + 5)
        4 * 3 * (3 * 3 * 9 * 5 + 3) + 2 + 8 * 3
        (4 + 4 * 4) + 2 * (9 * (5 * 9 + 6 * 5 * 2 * 9)) * 6 * 8 + (5 + 4 * (5 * 7 * 4 + 2 + 9 * 7) + 4 * 7)
        (7 * (6 * 3 * 2 * 8 * 8)) + (9 * 4 + 5) * 5 * ((5 + 8 * 5 * 6) + 8)
        6 + 3 * 4 + (3 + 2 * 8 + 4) + (6 + 9 + 5)
        8 * 2 + ((5 + 8 * 8 * 8) * (2 + 2 + 9 + 6 + 8 * 2) * 7 * 7 * (4 * 5 * 7 + 7)) * 9
        8 + (2 * 8 * 9 + 6 * 9) + 9 * (9 * 5) + (4 * (7 + 9 * 7 + 5 + 7) + 6 * 6 + 5 * 6)
        6 + (2 + 2) + 2 + (9 * 7 + 8 * 3 * 6 + 3) + 9
        6 + 4 * 8 + ((7 + 8 + 3 * 9 * 6 * 8) + 4 + 5 * (9 * 6 + 3 * 5 + 3)) * 7 + 2
        (7 + 5 + 4 * (5 * 3) + (7 * 5) + (5 * 8 * 2 + 2 * 3 + 2)) * 6 * 5 * 4 + 5
        3 + ((3 + 8 * 8) * 2 * 8 + 8 + (7 + 5 + 5 * 6 + 9)) * (9 + 9 + 9) * 9 * 3
        (6 + 3 + 4) * 5 + 3 + 4 + 8
        ((9 + 7 * 9 + 6) + 6 + 9) + 6 * 6 + (4 * 4 + 7) * 6
        6 * 6 + 9 + 3 + 4
        9 * 9 * 7
        5 * ((6 * 6 + 7 + 7) * 8 * 8 + (2 * 8 * 6 + 3 * 7) + (7 + 9 + 8 * 6 + 3)) + 3
        (5 * (3 * 4) * 2 + 5 * (6 + 9)) + 9 * 2
        (8 * (4 + 2) + 5) + 9 + 8
        ((4 + 4) * 4 * 4) + (9 * 5 * 9) * 4 * 8 * 9 * 6
        3 * 5 + 8 * 4 * 2 * 7
        2 + (2 + 9) + 2 * 4 + (8 * (6 * 9 * 3 + 2) + 5) + (9 + 2 * (2 + 9 * 9 + 6))
        3 + 6 + 4 * (6 + 4 * 4) + 5
        6 + (6 * 9 * 8 * 6 + (5 * 7 + 4 * 3) * 9) * 2
        (4 * 3 * 2 + 9 + 2) + 8 + 7
        (7 + 7) + 6 + 7
        (6 + (3 + 4)) * 3 * 4 * 4
        2 * (3 * (6 + 8) + (6 + 8 + 8) + 5 + 3 + 9) + 8 * 7
        (8 * (3 + 4) + 8 + 2 * 5 + 2) * 5 + 6 * 9
        6 + (4 * 3 + 8 * 7 * (5 * 8 * 2 + 6 * 9 * 4)) + 7 * 7
        2 + 4 * ((6 * 7 + 7 * 6 + 2 + 8) + 3 + 6 * 2 + (5 + 8 * 9) + 4)
        6 * 3 * (6 + (7 + 6 * 9) * 8 * 9 + 3 * 3) * 4 + (8 * 6 + (2 + 8) + 9) * 7
        6 + ((9 + 7) + 6 + 5 * 6 * (8 + 7)) + 6 + (2 * 9)
        9 + 8 * 3 + (6 * 8 + 5 + 9 * 8) * (9 + 2 + 9 + 3 + 4 * (6 * 9))
        8 + (8 + (8 * 4 * 7 * 8) * (9 * 7 * 2) * 4) * ((9 + 9) + 3 * 4) * 5 + 5 + 3
        9 * (2 + 8 + 3) * 7 * (8 * 7) * 3
        8 + 5 + (2 + 7) * 6
        9 + (3 * 5 * 2 + 9) * 9 + (2 * 9 + 4 + 6 * 7)
        6 + (9 * (9 * 5) + 5 * 8) + 6 + 4 + 3 * 7
        9 * (7 + 4 + 9 * 3 + (5 * 2 + 8) * 4)
        4 * 2 + 2 * 2 + 4 + 3
        (4 + 7 + 6 + 3 * 6) * 6 * 9 * 6
        5 + 7 * 9 * (3 + 3 + 8 + 4 * 7 * 5) + 7 + (3 + 7 + 5 * 5)
        (7 + (8 * 2)) * 3 * 3 + (2 * (3 + 3) * 8 * 4)
        6 + 4 * 7 + ((9 * 2 + 6) + 7 + (9 * 7 + 5 + 5 + 6) + 4 + 9) * 8 + 8
        4 + (2 + 2 + 6 * 2 * (8 * 3 + 4)) + ((2 + 7 + 8 * 5) + 6 + 8 * 4 * 3)
        9 * 8 + 4 * 9 * ((6 * 3) * 5 * 6 * (2 * 5) * 5 * 2) * 9
        9 * (7 + 9 + 3 + 5) + (8 * 3 * 7 * 7 * 9 + 3) * 7 * 5
        4 + (4 + 3) + 6
        9 + (9 + 8 + 5 * 3 * 9 * (8 + 3 * 2 * 9 + 5)) * 8 * 3 + (2 * 3 + (2 * 9 + 4 + 3 * 4) + 5)
        ((8 + 8) + (6 + 4 + 2 * 6 * 3)) * 6
        7 + (2 * 6 + 4 + 8 + 8 * 7) * 8 + 7 * 6
        7 + 8 + 4 * (5 * 4 * 9 + 5 + 8) * 3 + 2
        (6 + 5 + 4 + 7 + 4) + 8 + 7 * (7 + (7 * 7) * 4 * 4 + 4 + (9 * 4 * 3 + 9 * 5)) * 7 * 8
        (7 + 3 + (3 + 7 + 8 + 9 * 6) * 9 * 5) * (2 + (3 + 6 + 7 * 2) * (7 * 3) + 9)
        (9 * 7 + (8 + 6 + 2 * 5) * 6 * 9) + 4 + 3
        (8 * (5 + 2 * 2 + 6 + 8 * 9) * (4 + 3 + 7 + 4 * 4 + 6) * 2) + 6 + (5 * 9) + 3 + 9 + (8 + 3 + 9)
        ((7 + 3 * 3 + 6) * 8 + 7) * 9 + (2 + 5 + 4)
        (3 * (2 + 8 + 7 + 4 * 2)) + 6 * (9 + 5 * 2 + 5 + 7 * 3)
        (9 * 6 + 6 + 5) + (5 * (4 * 5 * 8 * 2 * 6) + (3 + 6 * 2 * 4 * 5 + 9))
        (7 * (8 * 7 * 6 + 9 * 5) + 3 * 7 * (7 * 9) * 7) * 2 * 4 * 4
        4 + 3 * (2 * (4 + 3 + 6) * 6 + 7 * 3 + (8 * 5 * 6 * 6)) * 7
        9 + (6 * 2 + (3 + 2 * 5 * 6 + 8 + 9) * 8) + ((6 * 3 + 6 * 2 * 4 * 4) * 8 + 5)
        ((5 + 6 + 8 + 7 + 2) * 9 + 2) * 7 + 2 + 5
        ((9 * 8 + 5 * 3 * 4) * 4 + (9 + 3) + 3 + 6) + 7 * (7 * 4 * 2 + 2 * 9 + 3)
        9 * (4 * 4 + 3 * 2) * 3 + 7 + (2 + 2 * 7) + 2
        4 + 2 * (6 + 7 * (6 * 2 + 7 * 6 * 4)) * (3 + 5 * 7 * (3 * 7 + 8 + 3 + 3) + (3 * 2 * 7))
        7 + 4 + (7 + 8 + 5 + 7 + 5)
        7 + 4 + 8 + ((5 + 2 + 5 * 6 + 5 * 2) + 6 * 8 + 6 + 3 * (6 + 3 * 2 + 8 + 4 + 4)) * 8 * 9
        (3 + 7 + 2 * 4 * (2 * 9 * 7 * 2 * 2 + 3) + (6 * 7 * 2 * 2 + 9 * 4)) + 2
        5 * 2 * (4 * 7 * 7) * 6
        5 * (3 * 8 * (4 * 8 + 8)) * 3 * 9 + 5 * 4
        (6 * 2 * 5 * 4) + ((5 + 7 + 7 + 6 * 9 * 4) * 8 + 4 * 9) * 9 * 4 * 6 * 6
        5 + (7 + 6 + 9) * 9 + 4 + 3 * 8
        2 + (7 + 7) * (7 * 9 + 4) * 7 + ((4 + 7 + 8 * 2 + 3 + 5) * 2 * (8 + 2) * 4 + 4) * 6
        3 + 8 + 5 * (2 + 2) + 9 + (5 + 7 + 2)
        9 * 7 + 4 + (7 + 2 * (4 + 7 * 4 + 9 + 7 + 2)) * (7 + (2 + 7 * 5 * 4 + 9))
        8 * 3 + 5 * 3 * ((2 + 8 + 4 + 7 * 4) * 7 + 3 * 7) + 6
        ((7 + 2 * 3 + 9 * 4) * 4 * (5 + 9 + 9) * 9 + (7 * 7)) * 2 + 9
        5 + 4 + 9
        4 * (7 * (4 + 9 + 3 * 7)) * 2
        (5 * 9 * 3) * 4 + (6 + 2 + 7 * (4 + 2) + 2) * (9 + 9 * 8 * 9 + (9 * 3 + 9 + 7 * 2)) + ((3 + 4 + 2 + 3) + 2 * 9 + 6)
        (3 + 3 + 5 * (8 * 9) * 7) + 4 + 7 * 5
        (9 + 3) + 3 * ((5 + 7 * 2 + 6 * 3 + 4) + 6) * 7
        9 + (3 * 5 + 7 + 4) * 5 * 9 * 3 * 4
        5 * ((7 + 7 * 7) + 9 + 2 + 3)
        (9 * 6 * 3 * 5 + 3) * 3 + 8 + 4 + 9 + (3 * (6 + 9 + 8 + 9 * 2 + 4) + 7)
        2 * 4 + 8 * 2 + (2 * 2 + 5 + 3 + 4 * 7) + 9
        (5 + 3) * 4
        (8 + 2 * (8 * 9 + 8 * 4 + 3) * 9 + 8 * 2) + ((5 + 2 * 7 + 8) * 5 * 6) * 3
        2 * 3 + ((4 * 7 + 6 + 2) * 5 * 5 * 7 * (2 + 3 * 6 + 6 + 3 * 3)) + (9 * 8)
        ((4 + 4 + 9 * 7 * 4) * (9 * 4 * 5 * 9 + 2 * 7) * 4 + 2 + 6) + 4 + 5
        6 + 8 * 3 * (4 + 5 * 7 * 8 * 4 * 8)
        9 * (5 * 4 + 5) * 8 + 4 + 6 * (5 + 3 + 9 + 4 + 7 + 2)
        4 + (2 * 3 + 8 * 3 + 7 + 2) + 9 + 6
        2 + (6 * 4 * 9 * (6 * 2 * 4 + 4 * 8 + 6) + 6) * 2 + 8 * 5 + 4
        8 * 8 + 6 * (4 + 3 + 3 * 9 * 9 + 9) * (4 * 9 * 6 + 2) * 7
        ((3 * 2 * 4 * 8) + 7 + 7 * 6 + (3 * 4)) * 7 * 2 * 7 * 8
        8 + (8 + (2 + 6 * 5) * (9 * 5 * 3 + 8) + 9)
        (2 * 5 + 8 * 3) + 9 * 4 * 9 + 5 * 2
        3 + 9 * (6 * 6 + 8 * 4 + 9) + 4
        (8 * 9) + 4 * 4 + 9 * 3 + (7 * 2 * (3 * 4) * 8 * 8)
        5 * 5 * (9 + 8 * 6 + 3) + 4
        4 + 9 + (4 * 5 + (6 * 7 * 9 + 9) + 5 * 4) * 7 * 4 * 7
        (4 * 2 + (3 + 8) * 6 * 5 + 5) + (9 + 9 + 2 + (2 * 9 * 9 + 9 + 4) + (4 + 6 + 2 + 6)) * 3 + 2
        9 + (5 * 5 * (4 + 3)) + 3 * 9 * 5 + ((3 * 5 + 6) * 7 * 2 + 2 * 3)
        (2 + 6 * 9 + 8) + 3 + (6 + 9 + 4 + 7 * 8)
        6 * 4 * (2 + (4 * 4 + 6 * 9 + 3) + 9 * 9) * 3
        (7 * (2 * 8 * 7 + 8 + 2 + 7) * 7 + 3) + 4 + 3 + 5 * ((4 + 9 + 8 + 7 * 9) + (7 * 5 * 3 + 8 * 8 + 5) * 5) + 8
        ((4 * 5 + 8 * 6) * 5 * 9 + 5) + 8 + 5 * 3
        9 * (3 + 2 + (3 + 7) + 7 + (5 + 6 + 6 + 3 + 3)) * 8
        3 + (2 * 8) * ((6 + 9 + 8 * 7) * 9 + 7) * 8 * 2 + 7
        (3 + 8 * 2 + 5 * 2) + 8 * (4 + 4 + 5 * 7) * (4 * 5) * 9
        8 * (6 * (5 + 9 * 3 + 5 + 7) * (5 + 6 * 2 + 3 * 5 + 2) * 2)
        (2 + 3 * 7 * (2 + 7 * 7) + (5 + 2 * 3 * 5 + 7 * 7) + (6 * 9 * 3 * 8 + 7)) + 8 + 3 * 3 * 2 + 9
        5 + 5 + 3
        8 * 6 + 9 + ((9 + 3 + 5 * 3 + 6) + 3 * 6)
        7 * (3 + (5 * 8 * 9) + 5 + 7 + 3) * 3 * 9 * 8
        5 * (3 * 8 * 8)
        8 + 7 * 7 + 5 + (2 + 4) + 8
        2 + 9 * 7 * 6 * 9
        9 + ((8 * 7 * 5 * 8 + 9) + 2 * (7 * 9 + 8 * 4) * 4)
        ((9 * 5) + (2 * 3 * 3 + 8 * 4) + (6 + 7 * 4) * 3) + 2
        6 * 5 * 5 + 3
        7 + 9 * 7 * 4 * (3 + (9 + 9 * 5 * 8) + 5 * 9 * (7 * 8 * 9 + 3 * 9 + 3) * 9)
        2 + 6 * 9 + 3 + (7 + 7 + 6 * 3) * 2
        (5 * 4 + 6 + 5 * (2 + 3) * (8 + 3)) + (6 + 9 * 9 + 3 + (6 + 6 * 7 * 3 * 4) * 2) * 7 * 4 + 7 + 5
        2 * (6 * 2 + 8) * 6
        3 + 2 + 3 + ((7 + 3 * 2 + 5) + 4)
        5 + ((3 * 2 * 2 + 4) + 5 * 4 + 3) * 7 + 6 + 7 + 6
        7 + 8 * (6 * 7 * (4 + 6) + (5 * 8 + 4 * 6) + (4 + 4 + 2 * 5 * 7 + 2) + 3)
        9 + ((5 * 5 + 5 + 5 * 6 + 4) * 2 * 9 + (8 * 6 * 3 + 6 * 8) + 8) + 6
        2 + 9 + (6 + 9) * 8 * 3 + 4
        4 * (5 + 9 + 7) * 9 * (6 * 2 + 2 + 9 * 5 + (6 + 9))
        ((7 * 6 + 2) + 8 * 5 + 9 + 4 + 4) + 8 * (6 + 7 * 4 * (3 + 5 + 5) + 6 * (6 + 7 + 5 * 4 * 5))
        (7 * 5 + 6) + (6 * 6)
        5 + (6 * 9 + (9 * 3 * 4 + 2 * 8) + 5 + (3 * 9 + 4 * 9 * 7)) + 9 * 8 * 4
        (8 + 8 + 7 * 9) + (8 + 9 + 2) + 4 + 7
        8 + (9 * 3 + 7 + 6 * 7)
        3 * ((4 * 6 + 6 * 9) + 8) + (5 + 6 * 8 * (5 * 2 + 3 + 8) * 3 + 5) + 7 + (3 + 3 * 2 + (4 * 2))
        5 * (2 + (8 * 7) + 2 * 7 * 2) * 3 + 9 + (5 * 5 + 8)
        2 + 4 + (8 * 9 + 9 + (5 * 4) + 8) + 5 * 4
        3 * 3 * (7 * 4 * 4 + (8 * 9 * 7 + 6) * 3 * (9 + 7 + 6 + 6)) * 9
        6 * ((9 * 8 + 9) + 9 * 3 * 5 + (8 + 8 * 2 * 7 * 8 * 4) + 4) + 2 + 2 * 5 * (9 + (2 + 5 * 6 + 7 * 2 + 7) + 5 * 4 + 6 * 3)
        (8 * (3 + 5 * 7 + 6 * 8) + 5 + 4) + 5
        (5 * 2 + (4 * 5 + 7) + (7 + 5 + 5 + 8)) * 2 * ((5 + 7) + 4 * 4) * (8 + (4 * 5 + 8) + 5 + 9 + 8)
        (7 * 8) + 2 + 2 * 4 * 6
        ((7 * 8) + 5) + (8 * 2 + 5 + 8) + 3 * ((8 + 7 * 9) * 8 + (8 + 9 * 8 + 2 * 9 + 6)) * 6 * (9 * 6 + (4 + 7) + 7 * (8 + 8 + 8 * 3) * 3)
        3 * ((2 + 3 + 3 * 5 * 6 + 9) * 2 + 3 * 6) * 9 * ((6 * 8) + 6 + (3 * 6 * 3) + (9 + 5 + 6)) + 2
        9 * 3 + 7 * 5 + ((3 * 8 + 4 * 5 * 5) * 5 + 8 * 2 + (2 * 5 * 3 + 5))
        (9 + 7 * 6 * 5 + 6) + 6 + 6 * 9 + 5
        5 * 5 + 6 * 3 * 8 + (4 + 2 * 3 + 5)
        9 + 9 + 6 * (5 + (8 * 9 * 9 + 5 + 8)) * ((9 * 5 * 8 + 8 * 7) * 4 * 9 + (7 + 2 * 5 + 7 * 3)) * (9 + 6)
        7 * (7 + (5 * 7 + 9 + 9 * 7 + 2)) + 3 * (7 + (5 + 8 + 5 * 5 * 4) + 8 + 9) * 5 * 7
        (8 * 8 * 9 + 5 * 5 * 2) * ((8 + 3 + 6 * 3 + 5 + 4) + (4 + 8 * 4) * 6) + ((2 * 7 * 5 * 5) + 9 * 4 + 3) * (6 + 7 * 9 + 3 + 4) * 4
        (2 * 7 * 8 * (7 + 4) + 8 + 7) + 4 * 4 + 7
        6 * 6 + (8 + 2 + 7) * 9 * (5 * (2 * 4 * 8 + 3 + 9))
        (8 * 7 + 7) * (7 * 6 * 3) + 7
        ((7 * 5) + 3 + 7 + (3 + 2 * 7 + 9)) + 7 + (4 + (9 * 4))
        3 + 7 + 9 + (2 * 6 * 2 * 5 + 2 + 4) * (6 * 7) + 8
        6 * 4 * 7 * ((6 * 4 * 6 * 8 * 2) * (2 + 6 * 3 + 8 * 2) + 5 + (5 + 3 + 2 + 5 + 9) * (5 * 4))
        8 + 5 + 4 * (8 * 6 + 9 + 7 * (3 + 9 * 9 * 8) + 9) * 4
        2 * 6 + 6 * ((8 * 3 * 7 + 7 + 8 + 3) * 9 + 6 * 8 + 5)
        (3 * 2 + 5 + 5 + 3 * 9) * 5 * 7 + (9 + (7 + 9 + 4 + 8) * (6 + 8 + 2) + 8) * 7
        5 + (8 * 4) + 5 * 2 * (2 + (9 * 2) * 5)
        7 + (4 * 4 * 9 + 6) + 9 + 2
        ((4 * 4 + 5) + 7 + 2 * 8 * 8 * 7) * 8 * (2 + 7 + 8 + 3)
        (9 * 4 * 5) + 5
        7 * 3 * (4 * 2 + 4) * 9 * (6 + 8 + 9 * (8 * 9 * 8) + 5)
        2 * 5 + 6 * ((3 + 8 + 3 * 3 * 6) + 3) * 4
        6 * 4 * 8 + 5 + (9 + 2 * (6 + 4 * 4 * 4 + 9)) * 6
        (8 + (3 + 3 + 3 * 4) + 8 * 7 + 3) + (7 + 3) + (5 + 3 * 8) * (7 + (3 + 8 + 2 * 7 * 7)) * 3
        3 + 4 + 7 + 2
        3 + 5
        7 * (5 * 9 * 3) + 6 * 3
        6 * (3 + (7 + 9 + 7 + 7) * 2 + 8 * 2) + 4 + 9 * 6 + 9
        (6 * 8) * 5 + 2 * 6
        6 + 3 + 2 + 8
        5 + 4 + 7 * 5 + ((2 + 5 * 3 * 8 + 5 + 9) * 3)
        3 * 2 + 7 + 2
        9 * 6 * 5 + (3 * 6 * (3 * 5 + 4)) * 7 * 7
        (9 + 7 * 7 + 9 * 7) + (2 * 2 + 4)
        8 * 8 * ((3 + 8 + 5) + (4 * 7 + 9) * 7 * (8 * 7 + 9)) + 3
        3 + 9 + 4 + (9 * 6 * (4 * 8 + 3))
        ((7 * 9 + 3) * (7 + 5 + 9 * 3 + 4)) + 2
        8 * (9 + 2) * ((5 + 4 * 7) + (7 + 7 * 5 * 8 + 6) * 8)
        (8 + 4 + 3) + 3 + (3 + 2 * 3 + (6 * 6 + 4 + 3 * 3 * 2)) + 4 + 4
        3 + 6 + 3 + 2 + 2
        8 + (8 * 8 + 5 + 9 * (4 + 5 + 9 * 2) + 6)
        6 + 3
        2 + 7 * (5 + 2 * 8 + 4 + (3 + 8 * 6 + 6 * 8) * 2) * 9 + (8 + 8 * 3 * 7 + 2 + (4 * 5 * 4 * 2)) * (8 + 7)
        8 + (6 * 4 + 7) * 5 + (5 + 9 + (6 * 4 + 9 + 6 + 8) * 5) + 9
        8 * (2 * 8 + 4) * (3 * (8 + 6 * 8)) + 4 * 2 * (5 + 4 + (7 * 7 * 6 * 6 * 8 + 4) * 2 * 7)
        ((7 * 4) + (9 + 6 + 7)) + 3 + 8 * 7 * 4 * 7
        6 * 4 + (5 + 2 + (5 * 5 * 2 + 6 + 7) + 7 * 3) + (3 * 2) * 4
        6 * 2 * 3 * (3 * (8 * 2 + 5) * (8 * 7 * 2 + 4 * 8) + 8 + (8 * 2) * 2) * 9
        5 + 6 * 2 + (2 + 2 + 7 + 8 * 6 * 6) * 3
        7 * 2 * 5 * 8 + (2 * 4 + 7 * 3 * 4) + 3
        8 + 8 * ((8 + 5 * 2) + 3 + (8 * 8) + 6 + 6 + 6)
        (3 + 2 * 2 + 2 + 3) * ((7 + 3) * 8) + 9 * 3 + 2
        6 + 4 * (5 * (2 + 3 * 9 + 4 + 4) + 7 * 8 + 2 * 8) * 7 * 9 * 6
        7 * (3 * (9 + 9 * 3) + 7 * 8 + 9)
        8 + 5 + 4 * ((2 + 6 + 5 + 9 + 9) * 7) + 4 * 5
        5 + (3 * 3) * 7 + 7 * 9 * 8
        2 + 3 + (4 + 9 * 7 + 8 + 7 * 3) + (3 + 4 * 5 * 6 * 8 + 8) + 6 + ((6 * 4 + 8 * 6) + 5)
        2 + (5 + 5 + (3 + 5 * 9 + 5 + 3) * (7 * 5 + 3) + (9 + 6 + 2 * 8 * 8 + 5) + 6) + 2 * 4
        (3 + 5) + 4 * ((3 + 4) + 8 + 7) + ((6 + 3 + 6) * 4 * 5 + 3 + 6) * ((3 * 8 + 9) + (5 * 7 + 3) + 3 + 2 + 2)
        6 + (9 * (5 * 7 * 6) * (6 * 4 * 7 + 6) + 4 + 8) + 6 * 8
        5 + (6 * 4 * 7 + 5 * 6 * (8 + 7 * 5 + 6 * 7 * 8)) * 7
        5 + (6 + 4) + (5 * 4)
        7 + (7 + 3 + 8 + (6 + 7 + 2 * 4)) * 3 + 2 * 6
        6 * (3 * (4 * 7) + 8) * 6 * (2 * 6 * 3)
        ((6 + 5 + 3) + (7 * 8)) * 3
        9 * ((6 + 5 + 5 + 8 + 4) * 5) * (6 * 4 + (8 + 7 * 2 * 3 * 6 + 6)) * 4 * 9 + 2
        (3 + (6 + 5 + 7 * 4 * 7 + 5)) * (4 + 4 + 7 + (2 + 3) * 2) + 8 + 6 * 4 + 5
        (4 + (4 * 7) + 9 * 5 + 2 * 3) + 7 * ((4 * 9 * 8 + 8 + 9) + 5 * 4 + 3 * 2 * 4)
        (7 + 2) * 7 * 7 * 4 * (9 * 6) + 9
        9 * 2 * 4 * (2 * 5 * 7)
        2 * 7 * (3 * 8 + 4 + 6 * 9 + 5)
        ((2 + 5) * 5 * 9 * 8 * 8 + 5) + 6 + (5 + (6 + 8 * 8 + 3 * 2 * 7) * 6) * 9 + 2
        (3 + 5 * 9 + 7 * 9) + 5 * (9 * 8 * 5 * 3 * 8 + 8) * 2 + 5 * 3
        (7 + 6 * 2 + 9 * 9) * 2
        4 * 7 + 7 + (5 + 3 + 3 * (4 + 2 * 3 * 6 + 2 + 4) * (5 * 8 * 6 * 4 * 5) + 3) + (5 + 3 * 6) + 5
        3 + 7 + 5 + 9 + ((4 * 5 + 2) + 5 + 6 * 9) * 5
        7 * (3 + 7 * 9 * 6) * 2 * 4 * (3 * (6 + 3 + 3) * 4 * 9 * 2) + 7
        (9 + 6 + 6 * 3 * (8 * 8 * 3)) * 6 * 4 * 7 * 6 * 2
        (6 + 3 * 5 * 7) * 3 + 8
        4 + (3 + (5 + 7 + 7 + 8 * 6 + 4))
        3 * ((4 + 2 * 3 + 9 + 3) * 5 + 8) + 4 * (4 + 4) + 2 + 9
        6 + ((3 + 3 + 7 + 9 * 9 * 7) * 5 * 6 + 4 + 5 * 4) * 6 + ((4 + 5) + 6 * 4 + 3 + 7) + (5 + (2 + 3))
        2 * ((4 + 6 + 2 + 7 + 7) * 4 + 9)
        (5 + 3 + 8) + 6 * 6 * 6
        6 + 6 * ((6 + 6) + 8 * 4 + 6 + 3 + 7) + 5 * 6 + 6
        5 * 8 + (9 * (5 + 5 * 2 * 9 + 5 * 3) * 2 * 9 + 4) * 2
        4 * 5 + 8 * (7 * (5 * 9 * 7 + 4) + 3) + 9 + 7
        2 * 8 * (6 * 9 * (4 * 6 * 8 + 5) + 4 * 4 * 8) * 6 * 6 * 8
        9 * 7 + 4 + (4 + 3 * 8 * 5) * (4 * 5 * 5 + 7 + 6)
        4 * (6 * 3 + 8 + 3 * 5) * 2 + 7 * 5
        (4 * 2 + (9 * 3 + 9 + 4 + 2 * 5)) * (7 * 7 * 4 * 7 * 7 * 4) + 3 + 9 * 8 * (9 * 8)
        5 * (9 * (7 + 2 + 8 + 5 + 7) * 8) * 7 * (6 * 4 + 4 + 9 + (9 * 9 + 2) + 7) * (3 + 8) * 2
        2 * (6 * 7 * 2 + 7) * 5
        6 + 9 + 2 * (9 * 2)
        ((7 * 2 + 8 * 3 * 6) * 5 + 6) * 8
        (3 * 6 + 8 * 2 + 3 + 8) * 6 + 7
        2 + (9 * 7 + (4 + 9 + 6 * 8 + 6) + 2 + 3 + 4) + 6 * 8 + 4
        (8 * 6 * 8 + 4 + 3) * (8 + 4)
        (3 + 2 + 5 + (2 + 9 + 2 * 2 * 5 * 9) * 2) * (7 + 5 + 6 * 6 * 9)
        7 + 3 + 4 + 7 * (8 + 5 * 2) + 3
        (8 * (8 + 2 * 3 * 7 * 7 * 8) + 7) + 5 + ((2 * 7 + 9 * 9) + 5 * (6 * 7 + 2 * 8 * 5) * 7 * 4 + 5) * 2 * (5 + 9 * 7 + 8) + (5 + (8 * 7 * 7 * 7 + 3 * 3) + (5 + 4 * 3 + 4) + 6 * 6)
        9 + 4 * (9 + 3 + 3) * (7 + 7 * 4 * 4 + 9 * (3 + 5 * 7)) + 7 * 4
        3 * 6 + (4 * 3 * 5 * 8) * (9 * 2 * (2 + 6 + 4))
        4 * (8 + (8 + 6) * 4 * 7)
        (6 * 6 + 6 + 4) * 8 + 5 * (9 + (8 + 3 + 2 + 5 * 8 + 3)) * (9 + (8 + 9 * 4) + 7) + 5
        6 * 3 * 7 * 2 + (6 * 2 + (4 + 4 + 2 + 7 * 8 * 2))
        (5 * 6) * (9 + 6 + 3 * 6 * 4 * 3) + (8 * 7 + 5)
        4 * 2 + 3 * ((9 * 3 * 8 * 3 * 7 * 2) + 6 * 3 * (9 * 7 * 9 + 6 * 5) * 4 + 7) + 3 + (2 + 9 * 3 * 9 + (7 + 7 * 3 + 4))
        ((5 * 2) + (6 * 5 * 4) + 9 + 4 * 7 + 7) * 8
        2 * 8 + (7 * 2 + 6 + 8)
        9 * 4 * 7 * 7 * (2 * (7 * 7 * 8 + 9) + 6 * 5 * (4 + 8 + 5 + 3)) + 8
        2 * 8 + 4 + 2 * 2 * (7 + 4 * (4 + 9) + 6 * 4 + 5)
        9 + 4 + 3 * (7 * 7 + 9 * 8 * 5 * (3 + 2 * 5 * 6)) + 8
        4 * 8 * (6 * (6 + 7 + 9 * 3 * 5)) * 4 * 8 + 3
        4 * 7 + (7 + 4 * (6 * 7)) * (7 + 7 + 6 + (2 + 9 + 6 + 5) + 6) * (8 * 2) + 3
        (6 + 8 * 8 * 4) * 2 + 2 * 9
        8 * (9 * 7 * 5 + (9 + 8 * 4)) * 9 + (9 * 9 * (3 * 8 + 4) * 9)
        (7 + 4 + 6 * (5 * 3)) * 5 * 8
    """.trimIndent()
}
package aoc

import org.assertj.core.api.Assertions.assertThat
import org.junit.Test
import java.util.*

class Day18OperationOrder {
    @Test
    fun noParantheses() {
        assertThat(evaluate("2 * 3 + 4 * 5 ")).isEqualTo(50)
    }

    @Test
    fun silverTest() {
        assertThat(evaluate("2 * 3 + (4 * 5) ")).isEqualTo(26)
        assertThat(evaluate("5 + (8 * 3 + 9 + 3 * 4 * 3) ")).isEqualTo(437)
        assertThat(evaluate("5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4)) ")).isEqualTo(12240)
        assertThat(evaluate("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2 ")).isEqualTo(13632)
    }

    @Test
    fun silver() {
        val sum = testInput.lines()
            .map { evaluate(it) }
            .sum()

        assertThat(sum).isEqualTo(209335026987L)
    }

    data class Calculation(
        var acc: Long = 0,
        var op: String = "+",
    )

    private fun evaluate(s: String): Long {
        val tokenizer = StringTokenizer(s.replace(" ", ""), "+*()", true)
        val stack = mutableListOf(Calculation())
        fun addOrMultiply(value: Long) {
            when (stack.last().op) {
                "+" -> stack.last().acc += value
                "*" -> stack.last().acc *= value
            }
        }
        while (tokenizer.hasMoreTokens()) {
            val nextToken = tokenizer.nextToken()
            when {
                nextToken == "*" -> stack.last().op = "*"
                nextToken == "+" -> stack.last().op = "+"
                nextToken == "(" -> stack.add(Calculation())
                nextToken == ")" -> {
                    val popped = stack.removeLast()
                    addOrMultiply(popped.acc)
                }
                nextToken.toIntOrNull() != null -> addOrMultiply(nextToken.toLong())
            }
        }
        return stack.last().acc
    }

    @Test
    fun goldTest() {
        assertThat(evaluateAdvancedMath("1 + (2 * 3) + (4 * (5 + 6))")).isEqualTo(51)
        assertThat(evaluateAdvancedMath("2 * 3 + (4 * 5)")).isEqualTo(46)
        assertThat(evaluateAdvancedMath("5 + (8 * 3 + 9 + 3 * 4 * 3)")).isEqualTo(1445)
        assertThat(evaluateAdvancedMath("5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4))")).isEqualTo(669060)
        assertThat(evaluateAdvancedMath("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2 ")).isEqualTo(23340)
    }

    @Test
    fun gold() {
        val sum = testInput.lines()
            .map { evaluateAdvancedMath(it) }
            .sum()

        assertThat(sum).isEqualTo(33331817392479L)
    }

    sealed class Exp {
        class Calc : Exp() {
            val exp = mutableListOf<Exp>()
        }

        class Num(val value: Long) : Exp()
        class Op(val value: String) : Exp()
    }

    fun Exp.Calc.eval(): Long {
        return exp.joinToString("") {
            when (it) {
                is Exp.Calc -> it.eval().toString()
                is Exp.Op -> it.value
                is Exp.Num -> it.value.toString()
            }
        }
            .split("*")
            .map { toSum -> toSum.split("+").map { it.toLong() }.sum() }
            .reduce(Long::times)
    }

    private fun evaluateAdvancedMath(s: String): Long {
        val stack = tokenizeExpressions(s)
        return stack.last().eval()
    }

    private fun tokenizeExpressions(s: String): MutableList<Exp.Calc> {
        val tokenizer = StringTokenizer(s.replace(" ", ""), "+*()", true)
        val stack = mutableListOf(Exp.Calc())

        while (tokenizer.hasMoreTokens()) {
            val nextToken = tokenizer.nextToken()
            when {
                nextToken == "*" -> stack.last().exp.add(Exp.Op("*"))
                nextToken == "+" -> stack.last().exp.add(Exp.Op("+"))
                nextToken == "(" -> stack.add(Exp.Calc())
                nextToken == ")" -> {
                    val popped = stack.removeLast()
                    stack.last().exp.add(popped)
                }
                nextToken.toIntOrNull() != null -> stack.last().exp.add(Exp.Num(nextToken.toLong()))
            }
        }
        return stack
    }

    private val testInput = """
        4 * 5 + 7 * 2 + 8
        ((3 * 6 + 2) * 7 + (5 * 4 + 6 + 8)) + 2 * 7 * 5
        ((5 + 9) + 6) + 6
        (9 + 3 + 3 + 3) + (2 + (6 * 2 * 3) + 5 * 5) + 3 + (2 * 3 * 6 * 4 * 3 * (7 + 4)) * 6 * 6
        (4 + (3 * 2 * 8 * 4 + 5 * 8)) + 3 * 9
        (3 * 9 * 7 * 6 * 3 + 9) * 9
        8 + 6 + 7 * 2 * 9 * 3
        (6 * 3 * 8 + (7 + 8 * 3)) * 4 * (3 + 3 * 2 * 8 * 8)
        (8 + 2 * (2 + 2)) * 2 * 9 * 7 * 3 * (9 * 4 + 6 * 9 + 2 * 7)
        (4 + 6 * 2 + 8) * 6
        ((3 * 7 * 5) * 3) + 3
        ((5 * 4 * 9 * 5 * 2 + 2) + 5 * 9 * 7 * 9 + 5) * 9 + 9
        7 + 7 * 7 * (4 * (5 + 5 + 9 * 7 * 5) * 3 * 8)
        3 + (7 * 7 * (3 * 2 * 8)) + 7 + 5
        3 * 9 + 5 * 7 + 5 * 6
        5 * 5 * (9 * 4 + (6 + 4)) * 6 + 3 * 8
        2 + (9 * 7 * 5 + 4) + 3 * (2 * 8 * 2 + 7 + (5 * 8 * 4 * 3) + 2)
        2 + (7 + 6 + 4 + 3 * 5 * (7 + 6 * 9 * 3 * 6 + 7))
        (5 + 7 + 3 * (5 * 3 * 4 * 5) + 2 * 2) * 6 + (9 + 4 + (4 + 9 + 2 + 3) + 7 * 4 + (8 + 8)) + 6 + (7 + (5 + 2) + 2 * 8 + 9)
        5 * 4 * 5 + 8 * (4 * 4 * 4)
        2 + 8 + 8
        2 + ((7 + 5 + 8 * 6) * 6 * 8 + 4 + 8) * 6 * 6 + (4 * 8 + 8 + 4 + 5 * 2) + (2 + 8 * 6)
        (3 + (2 * 7) * 6 * 2 + (5 + 7 * 3 * 2 * 4)) + (7 * 7 * 7 + 7 + 6 * 8) + (6 * 2 * (7 + 7 + 8) + 7 * 7) * 2 + 5 + 4
        6 + 9 + 3 * ((2 * 3 * 8 + 6) * 8 * 2 + 6)
        5 + 7 * (5 + 9 + (6 + 7) + 2 * 9 * 9) + 9 + (7 + 6 + (8 * 5) + 9 * 6 * 3) * 2
        ((6 * 3 + 8 * 5) + 8 * (3 + 8 * 7)) * (2 + 9 * 2 * 8 + 3) * 8 * 5 + 3
        8 * 6 + 2 * (7 * (8 * 9 + 7 + 4) + 9)
        6 * (2 + (5 + 6 * 2 * 8) + 4 * (4 + 6)) * ((2 * 7 + 6 + 7 * 6 + 6) * 5 * 5 + (3 * 8 + 9) * 3 * 8)
        8 * 2 * (2 + 4) * 8 * (7 + (4 * 8))
        (4 + 8 * 3 + 4) + (2 * 8 * 9)
        3 + (7 * 6) * 3 + 5 * 4
        4 * (2 * (8 + 3 * 7 * 5 + 7 * 2) + 3 * 5 + 8 + 3)
        (9 * (7 + 8 + 7) * 5) + 8 + 3
        5 * 8 + 8 * 3 * 2 + 4
        (7 * (9 + 8 + 3 + 7 * 4) + 8 * (2 * 5 * 6) * 5 * (4 + 7 * 4 + 9)) * 2 * 8
        8 * 7 * 7 * 8 + ((4 * 9 + 8) * 2 + 4 * 8)
        5 + (4 * 4 * 4 + 4 * (2 + 4 + 4 * 2 * 5 + 9) + 6) + 9 * 5
        8 * 9 + 8 * ((2 + 6 * 8 + 5 + 7) + (7 + 3 + 4) * 7) + (6 + 7 * 3 + (5 + 4 + 3 * 4 + 9) + 7 + 7) * (7 + 9 * 9 * (6 + 9 + 2 * 7) + 7 + 8)
        8 * (4 * 3 + 9 + 8) * 8 * 2 + 9
        (3 * 6 + 6 + 6 + 9) + 6 * 2 + 4 * 2 * 7
        2 + 7 + (2 + (4 + 2 * 3 + 7 + 8 + 3) + 2) * 6
        9 * (6 + 5 * 4 * (6 * 3) + (4 * 7 + 7) + (8 + 6 + 3 + 2 * 6 * 5)) + 4 + ((5 * 4 * 7) + 6 + 7 * (6 + 5 * 9 * 8)) + 4 * 4
        7 * 6 * 3 * 2
        7 * (3 + 8 * 8) + (3 * (7 + 8 * 3) * (8 + 9 * 4 * 9 * 6) + 8 * 7 * 3) * 4
        6 * 5 * 6 * (7 * 7 + 6 * 8) * 3 * 2
        6 * 6 + ((6 * 7 + 4) + 4) + 6
        7 * 8 * 8 + 9 * 9 + (6 * (3 * 6 + 3))
        2 + 5 * (7 + 3 + (5 + 6 + 2 * 4 * 3) + 9 + 4) + 3 + (9 * 2 + 4 + 4 * 9) * (4 + 7 * (4 * 2) * 3 * 9 * 5)
        (8 + 7 * (9 * 6 * 3 + 6)) + (4 + 9 * 6 + 6)
        4 * 6 * 8 * 5 + 8
        3 * ((7 * 5 + 5 + 5) + 5 + 4 * 3 * (2 * 2 + 5 + 5)) * 5
        7 + 5 + 6
        3 + 3 * (7 * 5)
        7 + 2 * (4 * 5 * 7 + 5) * ((8 + 7 * 9) + 3 * 7 + 8) + 4
        8 + ((7 + 8) + (8 * 3 + 7) + (2 * 6 * 7 + 6 * 7 * 7) + 6 + 6) + 8 + 8
        (2 + 8 + (8 * 4) * 6) + (2 * 2 + 8 + 8 * 6)
        9 * 9 * 9 + 4 * 4 * (6 * 6)
        6 * 3 * ((6 + 9 * 7 * 7) * 6 * 5 + 4) * 3
        (3 + 4 * (4 + 8 * 6 + 3 * 2) * 7 * (8 * 4 * 6) * 2) * 2
        3 * 3 * 8 * (8 + 8 * 6 * 7)
        ((9 + 9 * 4) + 3 * 3) * 5 + 2
        8 * 2 + 2 * (3 * 6) * 7 + 5
        9 * 2 * 5 + (2 + (2 * 8) * 2 * 8 * 7 * (7 + 7 + 9 + 5)) + 4
        6 + (7 * 5 + 9) * 3 * 3 * 2 * (4 * 3 + 4 + 9 * (9 * 9 * 4 + 7))
        9 * 4
        2 * (6 + 5 + 2 + 6 + 5 * (3 * 6 * 6 * 8 + 8)) + 6
        ((4 + 7 * 8) + 3 + 6 * 7 + 4 + 8) * 5
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        (3 + 5 * 9 + 7 * 9) + 5 * (9 * 8 * 5 * 3 * 8 + 8) * 2 + 5 * 3
        (7 + 6 * 2 + 9 * 9) * 2
        4 * 7 + 7 + (5 + 3 + 3 * (4 + 2 * 3 * 6 + 2 + 4) * (5 * 8 * 6 * 4 * 5) + 3) + (5 + 3 * 6) + 5
        3 + 7 + 5 + 9 + ((4 * 5 + 2) + 5 + 6 * 9) * 5
        7 * (3 + 7 * 9 * 6) * 2 * 4 * (3 * (6 + 3 + 3) * 4 * 9 * 2) + 7
        (9 + 6 + 6 * 3 * (8 * 8 * 3)) * 6 * 4 * 7 * 6 * 2
        (6 + 3 * 5 * 7) * 3 + 8
        4 + (3 + (5 + 7 + 7 + 8 * 6 + 4))
        3 * ((4 + 2 * 3 + 9 + 3) * 5 + 8) + 4 * (4 + 4) + 2 + 9
        6 + ((3 + 3 + 7 + 9 * 9 * 7) * 5 * 6 + 4 + 5 * 4) * 6 + ((4 + 5) + 6 * 4 + 3 + 7) + (5 + (2 + 3))
        2 * ((4 + 6 + 2 + 7 + 7) * 4 + 9)
        (5 + 3 + 8) + 6 * 6 * 6
        6 + 6 * ((6 + 6) + 8 * 4 + 6 + 3 + 7) + 5 * 6 + 6
        5 * 8 + (9 * (5 + 5 * 2 * 9 + 5 * 3) * 2 * 9 + 4) * 2
        4 * 5 + 8 * (7 * (5 * 9 * 7 + 4) + 3) + 9 + 7
        2 * 8 * (6 * 9 * (4 * 6 * 8 + 5) + 4 * 4 * 8) * 6 * 6 * 8
        9 * 7 + 4 + (4 + 3 * 8 * 5) * (4 * 5 * 5 + 7 + 6)
        4 * (6 * 3 + 8 + 3 * 5) * 2 + 7 * 5
        (4 * 2 + (9 * 3 + 9 + 4 + 2 * 5)) * (7 * 7 * 4 * 7 * 7 * 4) + 3 + 9 * 8 * (9 * 8)
        5 * (9 * (7 + 2 + 8 + 5 + 7) * 8) * 7 * (6 * 4 + 4 + 9 + (9 * 9 + 2) + 7) * (3 + 8) * 2
        2 * (6 * 7 * 2 + 7) * 5
        6 + 9 + 2 * (9 * 2)
        ((7 * 2 + 8 * 3 * 6) * 5 + 6) * 8
        (3 * 6 + 8 * 2 + 3 + 8) * 6 + 7
        2 + (9 * 7 + (4 + 9 + 6 * 8 + 6) + 2 + 3 + 4) + 6 * 8 + 4
        (8 * 6 * 8 + 4 + 3) * (8 + 4)
        (3 + 2 + 5 + (2 + 9 + 2 * 2 * 5 * 9) * 2) * (7 + 5 + 6 * 6 * 9)
        7 + 3 + 4 + 7 * (8 + 5 * 2) + 3
        (8 * (8 + 2 * 3 * 7 * 7 * 8) + 7) + 5 + ((2 * 7 + 9 * 9) + 5 * (6 * 7 + 2 * 8 * 5) * 7 * 4 + 5) * 2 * (5 + 9 * 7 + 8) + (5 + (8 * 7 * 7 * 7 + 3 * 3) + (5 + 4 * 3 + 4) + 6 * 6)
        9 + 4 * (9 + 3 + 3) * (7 + 7 * 4 * 4 + 9 * (3 + 5 * 7)) + 7 * 4
        3 * 6 + (4 * 3 * 5 * 8) * (9 * 2 * (2 + 6 + 4))
        4 * (8 + (8 + 6) * 4 * 7)
        (6 * 6 + 6 + 4) * 8 + 5 * (9 + (8 + 3 + 2 + 5 * 8 + 3)) * (9 + (8 + 9 * 4) + 7) + 5
        6 * 3 * 7 * 2 + (6 * 2 + (4 + 4 + 2 + 7 * 8 * 2))
        (5 * 6) * (9 + 6 + 3 * 6 * 4 * 3) + (8 * 7 + 5)
        4 * 2 + 3 * ((9 * 3 * 8 * 3 * 7 * 2) + 6 * 3 * (9 * 7 * 9 + 6 * 5) * 4 + 7) + 3 + (2 + 9 * 3 * 9 + (7 + 7 * 3 + 4))
        ((5 * 2) + (6 * 5 * 4) + 9 + 4 * 7 + 7) * 8
        2 * 8 + (7 * 2 + 6 + 8)
        9 * 4 * 7 * 7 * (2 * (7 * 7 * 8 + 9) + 6 * 5 * (4 + 8 + 5 + 3)) + 8
        2 * 8 + 4 + 2 * 2 * (7 + 4 * (4 + 9) + 6 * 4 + 5)
        9 + 4 + 3 * (7 * 7 + 9 * 8 * 5 * (3 + 2 * 5 * 6)) + 8
        4 * 8 * (6 * (6 + 7 + 9 * 3 * 5)) * 4 * 8 + 3
        4 * 7 + (7 + 4 * (6 * 7)) * (7 + 7 + 6 + (2 + 9 + 6 + 5) + 6) * (8 * 2) + 3
        (6 + 8 * 8 * 4) * 2 + 2 * 9
        8 * (9 * 7 * 5 + (9 + 8 * 4)) * 9 + (9 * 9 * (3 * 8 + 4) * 9)
        (7 + 4 + 6 * (5 * 3)) * 5 * 8
    """.trimIndent()
}