Skip to content

Instantly share code, notes, and snippets.

@eugene70

eugene70/Aoc2020_Day08.scala

Created January 22, 2021 12:15
Show Gist options
  • Save eugene70/beadf4c30a9f9f67c6ce8a3780f99208 to your computer and use it in GitHub Desktop.
Save eugene70/beadf4c30a9f9f67c6ce8a3780f99208 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
Aoc2020_Day08.scala
package aoc2020
object Day08:
object Op extends Enumeration:
val NOP: Op.Value = Value("nop")
val ACC: Op.Value = Value("acc")
val JMP: Op.Value = Value("jmp")
implicit class Executor(op: Value):
def execute(acc: Int, line: Int, operand: Int): (Int, Int) =
op match
case NOP => (acc, line + 1)
case ACC => (acc + operand, line + 1)
case JMP => (acc, line + operand)
type InputType = List[(Op.Value, Int)]
class Vm(implicit codes: InputType):
def run(implicit codes: InputType): (Boolean, Int) =
var executedLines: Seq[Int] = Seq()
var line = 0
var acc = 0
while (line < codes.length && !executedLines.contains(line)) {
executedLines = executedLines :+ line
val r = Op.Executor(codes(line)._1).execute(acc, line, codes(line)._2)
acc = r._1
line = r._2
}
(line == codes.length, acc)
def debug: (Boolean, Int) =
for (line <- codes.indices) {
val c = codes(line) match {
case (Op.JMP, opr) => codes.updated(line, (Op.NOP, opr))
case (Op.NOP, opr) => codes.updated(line, (Op.JMP, opr))
case _ => codes
}
if (c != codes) {
val r = run(c)
if (r._1) {
return r
}
}
}
(false, 0)
@main def day08: Unit =
val testData = time("testReady", () => ready(testInput))
time("tesPart1", () => part1(testData)) // should be 5
time("testPart2", () => part2(testData)) // should be 8
val data = time("ready", () => ready(input))
time("part1", () => part1(data))
time("part2", () => part2(data))
private def ready(input: String): InputType =
input
.linesIterator
.map(line => line.split(' '))
.map(a => (Op.withName(a(0)), Integer.parseInt(a(1))))
.toList
private def part1(implicit data: InputType): (Boolean, Int) =
val vm = new Vm
vm.run
private def part2(implicit data: InputType): (Boolean, Int) =
val vm = new Vm
vm.debug
private val testInput =
"""nop +0
|acc +1
|jmp +4
|acc +3
|jmp -3
|acc -99
|acc +1
|jmp -4
|acc +6
|""".stripMargin
private val input =
"""acc +8
|nop +139
|nop +383
|jmp +628
|acc -6
|acc +29
|acc +9
|jmp +457
|acc +29
|acc +38
|nop +451
|jmp +44
|acc +24
|nop +260
|acc +20
|jmp +24
|acc +36
|acc +41
|acc +31
|acc +42
|jmp +35
|acc +21
|nop +216
|acc +7
|jmp +42
|nop +408
|acc +18
|acc -4
|jmp +532
|acc -8
|acc +13
|jmp +529
|acc +36
|jmp +257
|acc +26
|acc +24
|acc -11
|nop +508
|jmp +249
|acc +44
|acc +25
|jmp +464
|acc +47
|jmp +318
|acc -6
|acc -1
|jmp +175
|acc +19
|acc +25
|acc +24
|jmp +523
|acc -7
|acc +45
|jmp +353
|jmp +67
|acc -1
|jmp -17
|acc -9
|jmp +180
|acc +19
|acc -15
|acc +5
|jmp +52
|nop +312
|acc +38
|jmp -6
|acc +6
|acc -11
|acc -6
|jmp +357
|jmp +455
|acc +27
|acc +29
|acc +9
|nop +414
|jmp +380
|jmp +1
|acc +33
|jmp +47
|acc +12
|acc +34
|acc -9
|acc +17
|jmp +214
|jmp +125
|acc +38
|acc +38
|acc +16
|jmp +310
|acc +9
|acc +10
|acc -2
|nop -84
|jmp +329
|nop +120
|nop -70
|jmp -88
|jmp +1
|jmp +1
|acc +23
|jmp -34
|nop +372
|acc +18
|acc +3
|acc +24
|jmp -50
|acc -11
|acc +27
|nop +441
|jmp +443
|acc +44
|acc -3
|acc +7
|jmp +389
|acc -5
|acc +36
|acc -17
|acc +15
|jmp +13
|acc +39
|jmp +407
|acc +8
|acc +21
|jmp +360
|jmp +425
|acc +7
|acc +29
|acc +6
|jmp +10
|jmp +1
|jmp +426
|acc +23
|jmp +3
|nop +2
|jmp +1
|jmp +240
|acc +16
|jmp -2
|jmp +47
|jmp +488
|jmp +1
|acc +45
|jmp +1
|acc +20
|jmp +344
|jmp +407
|acc +2
|acc +3
|jmp +117
|acc +50
|jmp -134
|acc +1
|jmp +238
|acc +27
|acc -11
|acc +16
|nop +134
|jmp +116
|acc -16
|nop +393
|jmp +2
|jmp +24
|nop +98
|acc +36
|acc +0
|nop +268
|jmp +131
|nop +294
|acc +23
|acc +26
|acc +43
|jmp +358
|nop +316
|jmp +300
|acc +22
|acc +47
|acc +19
|acc +2
|jmp +228
|jmp +176
|acc -4
|acc +20
|nop +83
|acc -19
|jmp -99
|acc +39
|nop +374
|acc +3
|jmp +57
|jmp +1
|acc +42
|jmp +404
|acc +4
|acc -4
|acc -10
|nop +293
|jmp +349
|acc -9
|acc +33
|jmp +284
|nop +1
|acc +18
|acc -1
|acc -5
|jmp +411
|acc +4
|acc -6
|acc +16
|jmp +313
|acc +0
|acc +39
|jmp +3
|acc -13
|jmp +148
|nop +51
|nop -207
|nop +357
|acc -19
|jmp +409
|acc +32
|jmp +103
|acc +5
|jmp +116
|nop +399
|acc +19
|acc +39
|nop +78
|jmp +298
|acc -16
|acc +31
|jmp +1
|acc +45
|jmp -207
|acc +6
|acc +36
|acc +34
|acc +47
|jmp -112
|acc +23
|acc +4
|jmp +289
|acc -17
|nop +307
|nop -92
|jmp -146
|jmp +293
|nop +44
|acc +5
|acc +2
|acc -19
|jmp +172
|acc +10
|acc +49
|acc -2
|jmp +6
|acc +3
|jmp +1
|acc -19
|acc +35
|jmp +328
|acc +38
|acc -5
|nop -83
|jmp -138
|jmp -55
|acc +35
|jmp +1
|jmp -216
|nop +220
|jmp +116
|jmp -78
|nop +331
|jmp +118
|jmp +287
|jmp -258
|jmp -181
|nop +85
|acc +31
|acc +10
|acc -13
|jmp +175
|jmp +66
|acc +34
|acc +6
|nop -126
|acc +38
|jmp +4
|acc +18
|jmp -13
|jmp -8
|jmp +1
|acc -9
|acc +31
|nop +92
|jmp +118
|nop +21
|jmp +110
|acc +20
|acc +20
|jmp +280
|jmp -142
|jmp +8
|nop -286
|jmp +170
|acc +22
|acc +29
|nop -127
|jmp +36
|jmp +328
|acc +27
|jmp -110
|acc +28
|acc +44
|acc +34
|acc +43
|jmp -42
|acc -19
|jmp +185
|acc -8
|nop -3
|acc +31
|acc -11
|jmp +142
|acc +49
|acc -2
|acc +28
|acc +17
|jmp +167
|acc +16
|jmp +165
|jmp -190
|jmp -117
|acc +0
|acc +16
|jmp +1
|acc -10
|jmp -39
|jmp +69
|jmp -187
|nop -101
|jmp +1
|acc +12
|jmp +218
|acc -6
|jmp -300
|acc +10
|jmp +104
|jmp +1
|acc +36
|jmp -243
|nop +138
|acc -15
|acc +13
|nop +278
|jmp -192
|acc +13
|jmp +275
|acc +0
|nop +92
|nop +214
|jmp -90
|acc +44
|nop +225
|acc +9
|jmp -348
|acc +16
|jmp -334
|nop -335
|acc -16
|acc -9
|jmp -89
|acc +35
|acc +2
|acc +26
|jmp +68
|acc -19
|acc +14
|acc -19
|acc -19
|jmp +262
|acc -16
|nop -246
|nop -251
|acc +26
|jmp +143
|nop +48
|acc +48
|jmp +249
|acc -8
|jmp +9
|acc +42
|acc +12
|acc +19
|acc -4
|jmp +213
|acc +1
|acc +29
|jmp -259
|acc +3
|acc +17
|acc -13
|jmp -131
|acc +16
|acc -9
|acc +28
|jmp +222
|acc +42
|acc +20
|acc -3
|acc +50
|jmp -339
|jmp +1
|acc +1
|nop -315
|acc +44
|acc +50
|jmp -143
|nop -87
|nop +155
|jmp +1
|nop +44
|jmp +158
|nop -10
|acc +9
|jmp +90
|jmp +89
|acc +27
|acc -5
|acc -8
|acc +40
|jmp +3
|nop -360
|jmp +117
|acc -14
|acc -16
|nop -184
|acc +20
|jmp +185
|acc -2
|acc +36
|nop +24
|jmp +195
|acc -8
|acc -3
|acc +7
|jmp -84
|acc +0
|acc -12
|acc +43
|jmp -270
|nop -434
|acc -15
|jmp +163
|acc +14
|jmp +29
|acc +32
|acc +26
|acc +13
|jmp -91
|acc +30
|jmp -163
|nop +175
|jmp -175
|jmp +20
|acc +0
|nop -426
|acc +22
|acc -6
|jmp -83
|acc +12
|acc +43
|acc +31
|jmp -46
|acc +27
|acc +26
|acc +24
|acc -12
|jmp +118
|nop -88
|nop -251
|acc -15
|acc +3
|jmp -450
|acc +11
|acc +19
|jmp -406
|acc +39
|jmp -45
|acc +40
|acc -7
|acc +22
|nop -329
|jmp -160
|jmp +80
|acc +0
|acc -4
|jmp +31
|acc +11
|acc -2
|acc +3
|acc +48
|jmp -366
|acc -16
|jmp -345
|jmp -259
|acc -8
|acc +29
|acc +4
|acc +2
|jmp -208
|acc -6
|acc +48
|acc -3
|jmp +82
|acc +1
|acc +47
|acc +40
|acc +31
|jmp -214
|acc +10
|jmp -328
|acc -18
|acc +39
|jmp +2
|jmp -403
|jmp +48
|jmp +19
|jmp -468
|jmp -397
|acc +40
|acc +39
|acc +22
|jmp +1
|jmp -305
|acc +22
|acc -5
|acc +23
|jmp -399
|acc +21
|jmp +17
|nop -239
|acc +0
|acc +29
|acc +2
|jmp -56
|acc -14
|acc +23
|jmp -375
|jmp -450
|nop +1
|jmp -29
|jmp -208
|nop +50
|jmp -468
|acc +3
|jmp +5
|jmp -347
|acc +21
|acc +35
|jmp -527
|acc -4
|acc -14
|acc -5
|nop +24
|jmp -418
|jmp +66
|acc +8
|acc -16
|jmp -447
|nop -324
|acc +27
|acc +4
|jmp -393
|jmp -276
|jmp +1
|acc +37
|acc +15
|nop -304
|jmp -534
|acc -16
|nop -514
|acc +11
|jmp -331
|nop -69
|acc +14
|acc +44
|jmp -125
|acc +3
|acc +5
|acc +0
|nop -381
|jmp -440
|acc +48
|nop -561
|jmp -543
|acc -10
|acc +44
|acc -16
|acc +45
|jmp -177
|acc +36
|jmp -576
|acc +36
|acc +14
|nop -323
|jmp -163
|jmp -118
|acc -1
|acc -14
|acc +7
|acc +7
|jmp +11
|acc +31
|nop -309
|jmp -109
|acc +41
|acc +11
|acc +4
|jmp -52
|acc +9
|acc +16
|jmp -481
|jmp -161
|acc -8
|acc +13
|acc +16
|jmp -488
|acc +30
|jmp -390
|nop -313
|jmp -333
|jmp -44
|acc +38
|acc +33
|acc +38
|jmp -619
|jmp -186
|acc +49
|acc -5
|acc -16
|jmp -214
|acc +16
|acc +35
|nop -584
|acc -12
|jmp +1
|""".stripMargin
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment