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Day18

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Hubert Van De Walle 2020-12-18 12:12:58 +01:00
parent 264ba1cb91
commit b0001697f5
3 changed files with 560 additions and 0 deletions
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165
days/src/main/kotlin/Day18.kt Normal file
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package be.vandewalleh.aoc.days
import be.vandewalleh.aoc.utils.input.Day
import be.vandewalleh.aoc.utils.input.Input
import be.vandewalleh.aoc.utils.input.Lines
import be.vandewalleh.aoc.utils.input.createDay
import java.util.*
enum class Operator { Add, Multiply }
operator fun Operator.invoke(a: Long, b: Long) = when (this) {
Operator.Add -> a + b
Operator.Multiply -> a * b
}
@Day(18)
class Day18(@Lines val input: Input<List<String>>) {
val lines = input.value.map { it.replace(" ", "") }
private fun parseGroups(line: String): Map<Int, List<IntRange>> {
var depth = 0
val groups = mutableMapOf<Int, MutableList<IntRange>>()
val openingPars = Stack<Int>()
for ((index, char) in line.withIndex()) {
when (char) {
'(' -> {
openingPars.push(index)
depth++
}
')' -> {
depth--
val group = groups.getOrPut(depth) { mutableListOf() }
group.add(openingPars.pop()..index)
}
}
}
check(openingPars.isEmpty())
return groups.also { println(it) }
}
private fun solveGroup(group: String, precedence: Boolean) = solveGroup(parseGroup(group), precedence)
private tailrec fun solveGroup(group: Pair<LinkedList<Long>, LinkedList<Operator>>, precedence: Boolean): Long {
val (operands, operators) = group
println(operands)
println(operators)
if (!precedence) {
for (i in operators.indices) {
val a = operands[i]
val b = operands[i + 1]
val result = operators[i](a, b)
operands[i + 1] = result
}
return operands.last()
} else {
var i = 0
while (operators.any { it == Operator.Add }) {
val a = operands[i]
val b = operands[i + 1]
val operator = operators[i]
if (operator == Operator.Add) {
val res = operator(a, b)
operands.removeAt(i)
operands[i] = res
operators.removeAt(i)
i--
}
i++
}
return solveGroup(operands to operators, precedence = false)
}
}
private fun parseGroup(group: String): Pair<LinkedList<Long>, LinkedList<Operator>> {
val operands = LinkedList<Long>()
val operators = LinkedList<Operator>()
val operand = StringBuilder()
for (char in group) {
if (char.isDigit()) {
operand.append(char)
} else {
val operator = when (char) {
'+' -> Operator.Add
'*' -> Operator.Multiply
else -> error("Unknown operator $char")
}
operators.add(operator)
operands.add(operand.toString().toLong())
operand.clear()
}
}
operands.add(operand.toString().toLong())
check(operands.size == operators.size + 1)
check(operators.isNotEmpty())
return Pair(operands, operators)
}
private fun solveLine(line: String, precedence: Boolean = false): Long {
var l = line
while (true) {
val groups = parseGroups(l)
if (groups.isEmpty()) break
val highestDepth = groups.keys.sorted().maxOrNull()!!
val solvableRanges = groups[highestDepth]!!
val solved = ArrayDeque<Pair<IntRange, Long>>()
for (range in solvableRanges) {
val rangeWithoutPars = range.first + 1 until range.last
val answer = solveGroup(l.substring(rangeWithoutPars), precedence)
solved.addLast(range to answer)
}
var solution = solved.removeFirst()
var inside = false
val builder = StringBuilder()
for (i in l.indices) {
if (!inside && i in solution.first) {
inside = true
builder.append(solution.second)
} else if (inside && i !in solution.first) {
inside = false
solution = if (solved.isEmpty()) -1..-1 to -1 // avoid null checks..
else solved.removeFirst()
builder.append(l[i])
} else if (i !in solution.first) {
builder.append(l[i])
}
}
l = builder.toString()
}
return solveGroup(l, precedence)
}
fun part1() = lines.sumOf { solveLine(it) }
fun part2() = lines.sumOf { solveLine(it, precedence = true) }
}
fun main() = with(createDay<Day18>()) {
println(part1())
println(part2())
}

372
days/src/main/resources/day18.txt Normal file
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6 + (3 + 6 + 5 * 4) * (4 + 3) * 8 + 6 + 6
7 + 6 + (9 + 4 * (8 + 7 * 8 + 2 * 7 * 9) * 9 + 5 + 3) + 6 + (7 + 5 + 7 * 9 + 9) * ((4 + 9 * 3 * 4 * 3) + 6 * 8)
3 + (6 + 4 * (8 + 4 * 3 + 8) * 7 + 5 + 4) * 3 * 2 + 5 + 4
2 * 4 + 4 + (5 * 9 + 3 + 9) * 6 * 2
3 * 7 + 4 + 6 * ((8 * 9 * 2 * 9) + (9 + 3 * 6) + (3 + 4 * 8 + 2) * 2) * 2
(9 * 2 * 7 * 5) * (6 + 3 * 3 * 3) + 5 + 9
(7 * 2) + ((7 * 3 * 7 + 2) * 3)
2 + ((4 * 8) + 6 * (3 + 5) * 4 * (6 * 7) * 4) * 8 + (7 * 5 * (8 * 3 * 8) * 5) + 6 * 2
(2 * 4 + (4 * 2 * 2 + 3 + 8 * 5)) * (3 * 4 + 6 + 7 * 5) * 5 * 5 + 6 * 7
4 * 8
5 * (5 + (3 + 2 + 7 * 6)) + 4
(8 * 2) * 8 * 9 * 7 + (9 * 6 * 6 + 4) + 2
2 * (3 * 8 + (3 + 5) + 4) * 7 + 8 + 3
6 * 2 * 5 * 9 * 4
(5 + 5 + 5 * 2 + 3 + 8) * 5 * 2 + 9 + (8 + 8)
5 + 6 + 3 * (2 * (4 + 9 + 7 * 8) * 9 + 4 + 8) * (5 * 7 * 9 * 5 * (3 + 2 * 6 * 4))
3 + (2 * 4) + 8 * (3 + 5) + 9 * 8
((4 * 7 + 5 * 2 * 3 + 9) + 4 + 6 * 9 + 6 + (6 + 9)) * 4
2 + (2 + (2 * 6 * 3 + 2 * 6)) * 9 * 7 + (7 + 7 + 2) + 5
7 + 4 * 4 * 4 * 8 * 7
6 * (5 * (8 * 8 + 7) * (6 + 5 + 6 * 3 * 2) + 4) * 9 * 2 + 7
(8 + 8 * (6 * 3 * 2 * 8 * 5) * (2 * 3 * 5 + 2 * 6)) + 5 + 4 * (4 * (7 * 9 + 8 * 6) * 7 * 9)
9 * (2 + 7 + 3 + 7 * 9) + 3 + 6 + 7 + 4
9 * 9 * (4 + 8 + (9 * 8 + 6 + 2 + 6 + 3) * 4 * 9 + 5)
6 + 9 + 2 * ((6 + 9 + 5) + 8 + 6 + 5 + 5 + 6) + 7 * 8
((3 * 2 * 5 + 3) + 8 + 7 + 9 + 2 * 8) * 9
7 + 4 + 8 * 4 + 4 + (4 * (7 + 8 + 6 * 6 + 2) + (7 + 9 + 7 + 4) * 9 + 9 * 5)
8 * 8 * (2 + 9 * 3 * 5) + ((4 * 5 + 3 + 8 * 6 + 3) * 5 + 2 * (6 + 8 + 6) + 4) * 2
((3 + 4 * 2 * 9 * 2) + (8 * 3 + 7) * 7 + 6 + (4 * 7) * 5) + ((2 * 8 + 5 + 7 * 8 * 9) + 7 + 6 * 5)
6 + 4
2 + (6 * 9 + 8 + 2) * ((7 * 5) + 6 * 9 * 7 * 7) + 3 + 6
((6 * 8 * 7 * 2 * 6) * 9 + 6 * (6 * 8) + 9) + 3 + 9
9 + (8 * 9 * 9) + (4 + 8 * (2 + 9 + 4) + (3 + 9 * 4 * 5 * 8 * 3) * 9 + 2)
3 * 2 * (3 + (4 + 3 + 3 * 5) * 4 + 3 * 8)
2 * 5 + ((3 * 9 + 6 + 7) + (2 * 6 * 4 * 2 * 5 * 7)) * 5
3 + 8 * 9 * ((3 + 4) + 2 + 9 * (4 * 4) + 3) + 3 + (5 + 3 + 5)
(4 + 4 * 7 * (3 + 4) * 2) * 8 + (4 + 8 * 9 * 9 + 4) + 2
(3 + 7 + 9 * 6 * (8 * 4 + 6 + 4 + 5 + 7) * (3 + 9)) + 3 + 2 * 4 + 7 + 8
(3 * 4 * 9) * 2 + 4 + 6 + 2 * ((8 + 2 + 5) + 5)
4 * ((3 + 9 * 2 + 4) + 6 * 9 + 6 * 5 * 3) * 9 + 7 * (9 * 9)
(8 * 4 + 3) + 7 * 6 * 4 * 3 * ((6 + 5) * 6 * 2 * 6)
5 * (7 * 5 * (7 + 2 + 6 * 5 + 8) + 3 * 2) * 2 + 3
7 * 9 + (4 + 8 + 7) * 3 * (9 + (8 * 2 * 7 + 8 * 7 * 6) + 3 * 8 * 9)
8 * 3 + (2 + 9 + 8 * 5) * 8 * 2 + (4 * 8 * 7 + 5)
5 + 4 + (2 + 3) * 9 + (3 * 7 * 9 + 3) * 4
4 + (8 * 8 * 5 * 4)
9 * 9 + (5 + (9 * 5 * 2 * 5)) * 9
(3 * (6 * 7 * 8) + 4 * 4 + (2 * 2 * 9 * 4)) * 7 * 4
4 + (8 * (7 * 6 * 2 * 9) + 5 * (3 * 7 + 6 * 7) * 7 * 8) + (2 + 2 * 4 + (8 + 5 + 5 * 3 + 2 + 5) + (2 * 9))
2 * 7 * (3 * 8 + 2 * 7) * 2 + 8 + 8
3 + (2 * 8 + 2) + 9
((6 * 3 * 4 * 9 * 7 * 4) + 2 + (7 * 6 * 3 + 6) * 9 + (5 + 3 + 5 + 7)) + 6 + 8 + 3
4 * 6 + (9 + 6 * 4 * 9 + (5 + 3 + 5) + 4) * 2 + 8 + 9
(7 + 2 * (4 * 5 + 5 * 3) * 8) * 4 * 2 + 7 + ((6 + 8 * 8 + 2 * 4 + 5) + (9 + 3))
6 + 6 + 9 + 9 + (4 + (2 + 4 + 8 + 3 + 3) * 8 + 3 * 2) * 3
5 * (4 + 4 + 4 * 7 * 4) + 7 * 4
5 * ((5 * 8 * 9 + 2 + 8) * 6 + (5 + 3) * 4 + 8 + 3) * 8
5 + (2 * 7 + 2 * 6 * 3) + (2 * 3 * (3 + 6 * 9)) * 4
((4 + 6 * 3) + 6) * 6
3 * 4 + (9 + (4 * 9 * 9 + 6 * 2) + 4 * 9 + 2) * 3
7 * 9 * 9 + 7 * 3 + 9
6 + 2 * 4 + ((9 + 5) + 4)
(7 * 2 * 6) * 6 + (5 * 3) + ((7 * 4) + (2 * 8 + 6 + 9) * (7 + 4) + 8 + (2 + 7 + 6 * 3 * 7) * 3) * 3 + 2
7 * (7 * 3) * 7 + (6 * 2 + (8 + 6 + 5 + 8 * 4 + 9) + 4 * 2)
(6 + (9 * 4 * 9 + 9 * 7)) * (4 * 5 + 6 + 2 + 6 + 9) * 6
((6 * 7 * 3) * 6 * 9) + (8 * 4 * 8) * 3 * 9 * 6
5 * 6 * 6
9 + (3 * 8 * (5 + 9 * 4)) * (5 * 2 + 4 * 6 * 3)
(8 * 5 * 2) * (8 * 3) + 4 * 6
((8 * 8 + 3 * 5 + 6) * 8 * 5) * 5
(3 + 5 * 7 * (2 + 4 + 3) + (5 + 4 + 7 * 3 + 9) + 6) * 3
7 + 2 * 7 + ((6 * 9) + 2 + 9 * 2 * 5) + 2 + 7
5 * (5 + 8 * 3 + 9) * 4 * 9 * 2
(9 * 3 * 3 * 9 + 5 * 9) + 8 * ((2 * 7 + 5 * 3) + 8 * 9 + (6 * 6 + 9) * 6) + (8 + 6 * 7 * 9)
8 * ((2 * 4 + 6 * 6 + 9) + 7 * 4) * 6 + 5
3 * 9 * 8 + (4 + (2 * 7 * 6) * 9) + 7 + 9
2 * (6 + 5 * 7 * (8 + 8 * 9 + 9 + 3 * 8) + (6 * 6) * 4) + 5 * 7 + 3
6 + 2 + (3 + 7 + 8 * 2)
(9 + 2 + 6 * (9 * 9 * 7 * 5 * 6 + 6) + (2 * 2 * 5 * 7)) + 3 + 4
2 + 8 * 5 + (5 + 4 + 7 * 3 * 6 * 9) * 5 * 9
(4 * (2 * 6 * 8) * 9 * 9 + 6) * 8 * 9 + 6 * 4 + 5
4 * 4 * 4 * 4 + 5
(2 * 2 + 3 + 2 + 7 + 6) * (4 * 7 + (2 * 5))
3 * 7 + 8 + 9 + 7 + 9
((2 + 6) + 4) * (8 * 5 * 3 + (5 * 4 * 3 * 9) * (4 * 9 * 2 + 2 + 5 + 9) + 8) + 2
5 + 6 * (3 + (3 + 8 + 5) + 7 + 6 + 5) + 9 + 9
(9 + 3) + 3
9 * (3 + 3 * (8 * 7) * 8) * (6 * 8) + 4 + ((4 * 2 + 6 + 5) + 8)
(4 * (6 * 8 + 3 * 3 * 9 * 6) + 6) * 5 * 3
6 + 4 + 4
(5 * 9 + (6 + 2 + 6) + 5 + 2 + 9) + (6 * 8) + (2 * 5)
(4 * (4 * 3 * 2 * 4) + 5 + 6) + 4 * 9 * (4 + (9 + 7) * 8) * 6 * 9
4 * 3 + 5 * 2 * (2 * 8 * (6 + 8 * 7)) + 6
7 + 4 * 8 * 4 * (6 * 5 * 2 + 8 * 7)
8 * 2 * (7 + 6 + (4 * 7 + 8 * 5 * 2) + (3 * 7) * 8) * 8 * 4
(7 * 9 + 4 * 2 + 6 * 7) + (8 + 7) * 9 * 9 * 6
(6 * 8 + 5 + 9 * 2 * 3) * 4 * 4 * ((7 + 7) * 8 * 3 + (9 * 2 + 7) * 2 + 3)
3 * ((2 + 8 + 9 * 4 * 5 * 4) * 5 + 8 + 8) + 5 + 5 * 2
4 * 4 * (6 * 4 * (5 + 2 + 9 + 5 * 8)) * 6
9 + 4 + (7 * 3 * 4 + 9) + (8 + 2 * 9 * (2 + 9 * 2 * 7 + 7)) + (5 + 4 + (9 + 8) * 4 + 7) * 6
(3 + 5 + 4 + (2 * 3 + 7 + 2 + 2 + 5)) * (6 + 3 * 5 + (9 + 2 + 4 + 5)) + 7 * 8 * 6
4 + 3 + ((2 + 9 * 3 * 5 + 9 + 7) + (3 + 3 * 8 + 2 + 6) * 4 + 5) * 8 + 6 + 2
4 * 9
5 + (2 + (5 * 6 * 3 + 9) * (8 + 7) + 9 + 4) * 4 + 2 + 3
(6 + 6) + 8 + 4 * (3 * 9 * 7 * 9 * 8) * 4 * 8
(5 + 7 + 8 + 5 * 4) + 4 * 6 + (2 * 4 + 8 + 9 + 2)
(9 + 2 * (2 + 3) + 5 * 3) * 2
7 + 9 + 3 + 3 + (4 * 9 + (6 * 5 + 8 * 9) + 7 + 4) * 4
6 + (2 * (5 + 8 * 3 + 5 + 7 * 2) * 8) * ((2 + 9) * 6)
7 * (3 + 2 + (9 + 9 + 7 + 5 * 7 * 9) + 4)
(5 + 6) + 8 * 5 * 6
8 + (2 + 7 + 4 + 6 + (5 * 7 + 6 + 2 * 5 * 6)) * 3 * 2
(5 * 4 * 4) * ((8 * 3) + 7 * 6 * (7 * 6 * 3 + 8)) * 5 + (5 * 9 + 2 * (3 + 6 + 9 * 5 * 9 + 2) + 2 + 6)
3 + 9 * 3 + 7 + 6
((9 * 7 + 7) * 2 + 8) * 6
(7 + 8 + (3 + 9) + 7 * 8 + 8) + 6
(4 + 5 + 5 + 3 * 9) * 7 + 9 * 7 + 8 * 5
8 * 5 * (8 * 6 * 2 + 4 * 3)
2 + 2 * (6 + (4 + 5 * 7)) + (9 + (4 + 5 * 8 * 2) * 3 + 2)
3 + 6 * ((9 + 9 * 7 * 5) + 7 * 5 * 8 * 4 + 6) * 3 + 2
8 + ((5 * 5 + 3) + 9) + 4 + 8
8 + (9 + (2 + 4 + 3 + 4) + (8 * 5 + 9 + 4)) * (4 * (3 * 7)) + 3 * 3
9 + 4 + ((5 + 9) + 2) * 6 + ((3 + 9 + 7) * 3 + 2 * 6 + 9 * (7 + 9 + 3 + 3))
6 * (8 + 5 * 3 * 8 + 3 * 2) * 5
8 + 5 + ((7 + 2 * 3 + 7) * (9 * 5) * 3 + 2) * 3
9 + 6 * 8 * ((4 * 5 * 4 * 8 + 8) + (9 + 9 * 7 + 6 * 5) + 6 * 6) * 2 + 3
4 + 8 + (6 + 5 * 4 * 2 + 2 * 5) + ((2 * 9 + 8 + 7) + (4 * 5) + 6)
((9 * 5 * 7 + 4 * 7) + (7 * 4 + 2 + 2) + 8 * 9 * 7 * 6) * (9 * (5 * 4 * 4 + 3)) + 8 * (5 + (5 + 8 + 7) * 4 * (9 + 8 + 6) * 3) * 2 * 6
((3 + 6 + 6 + 4 + 5 * 6) + 5 * (5 * 7 + 9 * 4) + (4 + 2 * 6)) + 3 + (8 + 4 + 5 + 4 * 4 * 8) + (7 * 3 * 4)
6 + (3 * 3 + 8 + 2) + ((6 + 7 * 3) + 9 + 7 * 3 * 4 * 4) * 6 * 6
7 + (6 * 4 * 3 + 7 + 8 * 7) * 3 + 8
8 * 9 * 6 + 9 * 3 * (8 * (8 * 5 + 5) + 4 * (5 + 5) + (9 + 2 + 2 * 5 + 3 + 5))
9 + 2 * 2 + (4 * 2) + 7
3 + 3 * (3 + 2 * 2 + 3) + (9 + 6 + (6 + 3 + 9) * 6 * 4 * (3 + 4 * 8 * 7 + 9 + 5)) + 9
((2 * 8 + 8 * 4 * 3) + 4 + 7 + (5 * 5 + 8 + 6)) * 6 + 4 * ((4 * 3 * 8 + 2 * 9) * 4 * 8)
(4 + 9 + (3 * 5 * 5)) + 4 + (3 * 4 + 4 + 2 + 6) + 7 * 5 + 8
(2 * (2 + 3 + 2) + (3 * 8 + 6)) * 9 * 2 * 9 * 9 + 9
5 * (9 + 4) * 4 + (3 + 7 + 9) + 5
4 * 5 + (7 * 6 + 7 + 5) * (6 + 2) + 7 * 4
3 * 6 + 3 + (6 + 7 * 2 * 4) + (9 + (7 + 8 + 7) * 6 * 9 + 6 * (6 * 8 * 8 + 5)) + 2
5 * 2 + ((9 + 7 * 2) * (9 + 2 + 3 * 2) * 7)
((4 + 8 + 2 + 3 + 6 * 3) * 8 + (7 * 9 * 5 + 3 * 2) * (7 * 7 * 9 * 2 * 5) * 3) + 8
9 * 3 * (6 * 2 * 6 * 4 * (3 * 9) + 2) + 4
2 * (6 * 9 + (9 * 2)) * 4
9 + 7 + 7 * 7 * (7 + (9 * 9 * 2 + 4 + 9) * (3 + 4 + 2 + 9) + 6)
4 * 6 + (3 * (2 * 5 + 4 * 3 + 4) + 6 + (5 + 9 * 7) * 9 + 3) * (3 * 3 * 7 * 7) * 8 + (5 * 6 + 4)
4 + 7
((7 + 5 * 8 + 6 * 3 * 9) * 3 + (5 * 9 * 3 * 2)) + (5 * 6 * 4 * 2) * 7 * 4 + 5 * 6
(2 + 9 + 2 * 7) + 6 + 3 + 9 + 7
((6 * 5 + 2) + 4 * 7 + 4 * (7 * 4 * 2 + 4) * 7) * 3 + 4
5 + (2 * 3 + (9 * 8 * 9)) + 7 * (6 + 7 + 2)
4 * 5 * 8 + 6 * ((4 * 7) * 8 * 8 + 7 * 8 + 2)
8 + ((8 * 2 * 6) * 9 * (9 + 2 + 9 + 4 * 3 * 7) + 5) * 2 * 8 + 8
((8 + 4 * 2 + 4) * 5 * 4 + 4 + 8 + 5) * 4 * 6 + 3 + 4 * 4
6 + 7 * 6 + (6 + 6 + 2)
((4 * 9 * 9 + 8) * 6 * 9 + 6) + 2 + 8 * 8 * ((4 * 9 + 6 * 7 + 5) * 4 * 7) * 7
6 + 5 + (8 + (2 * 8 * 6 * 3) * 4) + (8 + 2) + 2
(9 * 6) + 5 * 2 * (8 + 5 + 6 + 7) * 4
9 + (8 * (2 * 4) + 6) * 8 * 4
9 + 6 + (3 + 2 * 8)
3 + 9 * 2 + 7 + 4
((7 * 9 + 3 + 3) + 5 + (4 * 7 + 9 + 4 + 2)) * 3 + ((9 * 6 * 8 + 5 + 7) + 5 + (4 + 8) + 2 * 4) + 3 * 5
6 * (9 + (4 * 7 + 9 * 7 * 6 + 9) + 6 + (4 + 7 + 3 * 4 * 6) + 4 + (5 + 2 * 5)) + ((8 + 7 * 3 + 6 * 4 * 7) * 3) + 5 + 9
((7 + 5) + 9 + 8 * 5) * 6 + 3 * 7 + 2 * 3
(9 + (5 + 8 * 9) * 9) + 3 + 6
9 + 7 * 5 * 8 * (2 + 4)
6 + 3 * 7 + (3 * 5 + 8 * 7 * (4 * 8 * 5 + 9 * 6 * 4)) * 3
5 * (4 * 2 * 5 + 6 * 7 * (3 * 9 * 9 + 4 + 2)) + 9
(5 * 7 + (8 * 4 * 4 * 4 + 5) + (9 + 9) * 5 * (3 + 6 + 7 * 9 + 6)) * 4 + 6 + 4 + ((7 * 4 + 7 + 2 + 7 + 2) * 5)
(4 * 3 + 5) + 2
(4 * 4 * (9 * 7)) + (4 * 5 * (3 + 9 * 3 * 2)) * (5 * 7 * 4 * 6)
2 + 5 * (7 + 2 + 8 + (2 * 9) + 7 + 7) + 2 + 6
((9 * 5 * 3 + 7 + 7 * 8) + (6 * 3 + 4 * 8) + 4 * 9 + 9) + 9
8 + 2 * (9 + (7 * 7 * 3) + 2) + (6 + 5 * (3 + 6 * 9) * 6 + 3)
((4 + 8 * 6 * 9 * 2 + 3) + 8 * (7 * 7 * 8 * 6) + 9) * (2 + 6 * 9) + 6 + 4
6 * 5 + 8 * 7 * (3 + 4 * 7)
7 * 5 * (5 * 7 + (2 * 7 * 6) + (6 * 3) * 9 + (4 * 7 * 6 + 7 * 7 * 3))
8 + 7 * 3 + (4 + 6 * (4 * 4 + 9 * 7) * 6 + 8 * 2) * 8 * (8 * 3 + 3 + 6)
2 + 6 + ((6 + 2 * 3 + 2 + 2 + 6) + 3 + 5 + 7)
((9 * 7) + 8 * (9 * 3 * 9 + 8) * 2 + 7 * (6 + 7 + 4 + 6 * 3)) + 7 * 4 + 7
5 + ((8 + 6) * 7 * 9 + (4 * 5 + 5) * (5 + 3) * 7) + 3
4 + ((5 + 4 * 5) + 2 * 6 + 5)
6 + 6 * 8 + (3 * 8 * 2 * (5 + 3)) + 6 + ((3 * 7) + 9 + 7 + 7 + 6 * 7)
(2 * (4 * 7) + 6 + 8 * 3 + 7) + 8 * 6 * (3 + (3 + 4) * 2 * 3 * (4 * 5 * 2 * 2 * 6)) * 8 * 4
6 + (8 * 3 + (3 + 9 * 6)) + 2 * 4
3 * (2 * 9 * 3 + 3) * 5 * 6
6 * 5 * 3 * 3 * (6 + 7 + 9 + 8)
9 + 2 * 8 * 6 + ((9 * 9) + (3 * 4 + 4 + 4 * 9 * 7) + 5 + 4 + 9 + 9)
3 + 9 * 5 * 8 * 5
5 + 3 * 7 + 9
9 * ((4 + 4 * 6 + 5) + 3) * (4 + 3)
(3 * 6 * (8 * 6 * 5) + 2 * 3 + 4) + 6 + 8
6 + (4 * 8) * 3 + 5 + 2
2 + (2 * (7 + 6) * (5 + 3 + 2) * 2 + (7 * 9)) * ((5 + 9 + 2 * 8 + 8) + 9 + 8) + 9 + 6
((5 * 8 * 4) * 6) + 4 * 4
6 * 2 * (3 + 4 + 3) * (5 * 4 * 7) * (2 + 4 * 2 + 8)
6 + 9 * (2 * 7 + (4 * 5 + 7 * 6 + 7 + 8) + 4 + 5)
((4 + 6 * 2 * 4) + 2 + 4 * 3) * 9 * 5 * 9
6 + (3 + (5 + 4 * 2 * 3) + 6) + ((8 + 4 * 8 * 5 * 4 * 4) + 5 * (6 * 6 * 9 * 9) * 3 + 3)
7 * 8 * (7 + 8 * 2 + 6) * 9
5 + 3 + 4
4 + (3 * 6)
9 * (2 * 6 * 2 + 4 * 5 + (2 + 4 + 6 + 3 * 4 * 5)) * 4 * (8 * 7 * 6)
6 * (9 * 5 * 9 * 4 + 4)
(8 * 7 + 8 * 9 + 2) + 4
6 + (7 * 6 + 8 + 2 * 3 * 8) * 8 + 4 * 2
((4 * 8 * 7 + 8) * 9) + (9 + 5) + 4 + 2
4 + 9 + (5 + 3) + 4 * (9 * (4 * 7 * 5 * 2) * 8) * 3
5 + 3 * 5 + 6 * 7 + (2 + 7 + (7 + 7 + 9 + 2 * 4 * 6) * 6 * 8 * 8)
(6 * 4 * 8) * 9 + 7 + 2
3 * (5 + 5 + 2 + 6 + 3) + 5
((2 + 6) + 3) * 7 + 3 * 8 + 2 * (7 + 4 * 4)
4 * 6 * 8 + (7 * 2 * (5 * 7) * 3 * (2 * 4 + 6 * 4 * 2)) + 2 + 9
7 + (9 * 4 * 5 * 8) * (4 * 2 + 7 * 2 * 3 * 7) * 3 * 2 * 9
4 + 6 * 8 * 4 * (2 * 8) + 4
4 * (8 + (9 + 3) * 4) + 2
(6 + 7 * 5 + (8 * 4 * 5 + 7 + 8 * 8) + 9) + (4 + (6 * 8 * 6 * 3 + 9) + 4 + 2) + ((9 + 4 + 8 * 7 * 9 + 2) * 2 + 2 * 2 * (2 * 6 + 9)) + 6
8 + ((5 * 5 + 3 + 2 + 5 * 6) * 6 * (2 + 9 + 8) + 5 + (7 + 6 + 4) + 9)
(4 * 5 * 9 + 8 + 8 * 5) * 2 * (7 * 9 * 3 + 3) + (2 + 5 * 5 * 3 + 4) + 5 + 7
(2 + 8 + (5 + 7 + 2 * 9)) * ((8 + 6 + 8 * 2 * 3 + 4) * 3) * 2 * 9
((2 + 7 + 6) + 2 * (3 + 6 * 6 * 5 * 2 * 7) * 3 + 8) + 3 + 7 * 6
5 * 5 + 7 + 3 + 6 * 2
4 + 9 * (9 + 6 + 6) * 7 * 9 * 8
((8 + 5 * 8 * 4) * 5) * (8 * 7 * (4 + 5 + 4 + 3 * 3))
(9 * (8 * 9 + 9 * 6 + 5 * 8) + 3 * 9 * (5 + 6 + 6 * 4 * 4 * 6)) + 4 * 6 + 8
6 + (9 * 8 * (8 * 3 * 3 * 7))
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5 * 5 + (2 * 9 * 9 * 6) + 3 * 8
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9 * (5 + 6 + 2 + (8 * 8 + 9 + 8 + 4 * 6))
(9 + 2 * 7 * 2 + 5) + (4 + 6 * 3) + ((6 * 4 + 4 * 2 + 5) + 8 + 6 * 6)
3 + (7 * (2 + 5 * 5 * 4 * 4 + 7) * 4 * 4)
8 + 3 * ((3 * 7 * 3 + 4 * 5) * (6 + 8 + 9 * 7 + 6) * 9 + 5 * (5 + 4 + 4 + 4))

23
days/src/test/kotlin/Day18Test.kt Normal file
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@ -0,0 +1,23 @@
package be.vandewalleh.aoc.days
import be.vandewalleh.aoc.utils.input.Input
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.params.ParameterizedTest
import org.junit.jupiter.params.provider.CsvSource
class Day18Test {
@CsvSource(value = [
"1 + 2 * 3 + 4 * 5 + 6 , 231",
"1 + (2 * 3) + (4 * (5 + 6)) , 51",
"2 * 3 + (4 * 5) , 46",
"5 + (8 * 3 + 9 + 3 * 4 * 3) , 1445", // !!!
"5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4)) , 669060",
"((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2 , 23340"
])
@ParameterizedTest
fun examplesPart2(input: String, output: Long) {
val day18 = Day18(Input(listOf(input)))
assertThat(day18.part2()).isEqualTo(output)
}
}