commit 9d92871af1797dda61aa987ae63596e0d568a77b
parent 05c0af8e61a4eff0ebabdcc79973845e1d6afdaf
Author: Shimmy Xu <shimmy.xu@shimmy1996.com>
Date: Tue, 8 Dec 2020 19:57:33 -0600
Add 2020 day 08
Diffstat:
| A | 2020/day08/input.txt | | | 631 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | 2020/day08/main.go | | | 80 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 711 insertions(+), 0 deletions(-)
diff --git a/2020/day08/input.txt b/2020/day08/input.txt
@@ -0,0 +1,631 @@
+nop +283
+acc +26
+acc +37
+acc +6
+jmp +109
+acc +10
+jmp +18
+acc +5
+jmp +327
+acc -4
+jmp +269
+acc -7
+acc +27
+nop +7
+acc +0
+jmp +81
+acc +42
+nop +338
+acc -5
+jmp +391
+nop +276
+jmp +354
+acc +22
+jmp +528
+acc +0
+acc +20
+acc +15
+acc -17
+jmp +537
+acc -15
+acc +12
+acc -17
+acc +17
+jmp +34
+acc -19
+jmp +88
+acc +19
+acc +35
+acc +17
+acc +7
+jmp +443
+acc +22
+jmp +584
+jmp -2
+jmp +408
+acc +46
+acc +43
+acc +4
+jmp +532
+acc -19
+acc -19
+acc +38
+acc -10
+jmp +476
+acc +1
+acc +3
+acc +19
+acc +28
+jmp +480
+jmp +1
+acc +32
+acc -2
+jmp +518
+acc +5
+acc -19
+acc +19
+jmp +344
+jmp +99
+acc +0
+acc +30
+acc -13
+acc -19
+jmp +385
+acc -18
+jmp +157
+acc +15
+acc +4
+jmp +503
+acc -6
+acc +42
+jmp +461
+acc -6
+jmp +328
+acc -9
+nop +199
+acc +15
+jmp +206
+jmp +182
+acc +35
+nop +275
+acc +3
+jmp +1
+jmp -25
+nop -20
+nop -6
+jmp -7
+nop +145
+acc +4
+acc +28
+jmp +315
+nop -76
+nop +12
+nop +170
+jmp +291
+acc -16
+acc +5
+nop -10
+jmp +235
+acc +6
+acc -1
+nop +492
+acc +44
+jmp +119
+jmp +128
+jmp +1
+jmp +328
+acc -7
+jmp +126
+nop +351
+acc +9
+acc +4
+acc -1
+jmp +276
+acc +0
+nop +133
+acc +36
+acc +32
+jmp +173
+acc +41
+nop -95
+jmp +153
+acc +7
+acc +13
+acc -10
+jmp +223
+jmp +186
+acc +4
+jmp +90
+acc -7
+acc +15
+jmp +366
+acc +9
+acc +27
+acc +1
+jmp +417
+acc -19
+jmp +268
+acc +38
+acc +1
+acc +27
+jmp +1
+jmp +420
+acc +13
+acc +9
+acc +1
+jmp +370
+acc +25
+acc +3
+acc -1
+jmp +324
+nop +352
+acc +39
+jmp +121
+acc +15
+jmp +348
+jmp +11
+acc -12
+acc +23
+jmp +407
+jmp -6
+acc +43
+jmp -8
+acc +48
+nop +316
+acc +5
+jmp +323
+acc +3
+jmp +1
+acc +34
+jmp +191
+jmp -160
+acc -18
+acc +33
+jmp -79
+acc +9
+acc +50
+acc -15
+acc -1
+jmp -100
+acc -18
+acc +49
+nop -184
+acc +20
+jmp +404
+nop +280
+jmp +294
+acc -12
+jmp +1
+acc +8
+jmp +320
+nop +387
+acc +15
+nop +359
+acc -7
+jmp +182
+nop +1
+nop -40
+acc +3
+jmp -38
+acc +44
+acc -11
+nop +297
+jmp +174
+jmp -140
+acc +32
+acc +28
+acc +8
+acc +9
+jmp -194
+acc -9
+acc +32
+jmp +291
+acc +43
+nop +220
+acc +9
+acc +15
+jmp -167
+jmp -8
+acc -3
+acc +12
+jmp +195
+acc +48
+acc +16
+nop +137
+acc +29
+jmp +48
+acc +11
+acc +46
+acc +22
+acc -2
+jmp -167
+jmp +123
+jmp +128
+acc +24
+acc +50
+acc -10
+jmp -202
+acc -17
+acc -13
+jmp +1
+jmp +89
+acc -4
+acc +41
+jmp +111
+acc +50
+acc +41
+jmp +83
+acc -2
+nop +194
+jmp +239
+acc +33
+acc +25
+jmp +347
+nop +6
+acc +0
+acc -16
+jmp +73
+acc -12
+jmp -5
+jmp +188
+jmp +1
+jmp -264
+acc +44
+acc +6
+acc +35
+jmp +312
+acc +28
+acc +8
+jmp -15
+acc +48
+jmp +215
+acc -1
+jmp -55
+acc +22
+acc -18
+acc +47
+jmp -266
+jmp +1
+acc +18
+acc +0
+acc -11
+jmp +221
+acc -10
+nop -189
+jmp -216
+jmp -3
+acc -8
+acc +22
+jmp +253
+jmp -168
+acc -7
+acc +14
+nop +315
+acc +11
+jmp -47
+nop -36
+acc +40
+jmp +95
+jmp +13
+acc -14
+acc -5
+acc +48
+jmp -85
+acc -17
+acc +20
+acc -5
+acc +6
+jmp +221
+acc +32
+acc +7
+jmp +12
+nop +266
+acc -11
+acc -8
+nop +182
+jmp -184
+nop -137
+acc +48
+jmp +155
+jmp -124
+acc +44
+jmp +24
+acc +12
+jmp -292
+jmp +195
+jmp -301
+acc +45
+acc -14
+jmp -66
+jmp +86
+acc +33
+jmp -136
+jmp -146
+acc -3
+acc -13
+acc +16
+jmp -183
+acc +4
+acc -8
+acc +14
+jmp -169
+acc +35
+acc +18
+nop -24
+jmp -127
+jmp -219
+jmp +190
+acc -4
+acc +1
+jmp +62
+nop +220
+acc +18
+acc +36
+jmp +58
+acc +25
+jmp +21
+nop -24
+acc +2
+acc +49
+jmp -325
+acc +24
+acc +23
+acc +13
+jmp +143
+jmp -45
+nop +212
+jmp -29
+acc -12
+acc -12
+jmp -107
+nop +126
+acc +32
+jmp -113
+jmp +1
+acc -6
+jmp -102
+nop +57
+acc -16
+acc +25
+jmp -213
+acc +19
+acc +29
+acc +0
+jmp -320
+acc +42
+jmp +94
+acc +6
+jmp -363
+acc -18
+jmp -365
+acc +39
+jmp +13
+acc +47
+acc +24
+acc +9
+acc +25
+jmp +151
+acc +17
+jmp +1
+jmp -77
+jmp +24
+acc -13
+acc -13
+jmp -141
+acc +22
+acc +9
+nop +92
+jmp -334
+acc +30
+acc +11
+jmp -304
+acc +8
+jmp -275
+acc +35
+jmp -95
+jmp +1
+acc -18
+nop -407
+nop -18
+jmp +146
+acc +37
+acc -4
+acc +19
+jmp -409
+acc +28
+acc -10
+nop +151
+acc +17
+jmp -418
+nop +56
+acc +40
+acc -13
+jmp -301
+acc +28
+acc -7
+acc -6
+jmp +62
+acc +0
+acc +6
+acc +25
+acc +26
+jmp +18
+acc -14
+jmp +93
+acc +43
+acc +19
+jmp -109
+acc +24
+acc +0
+jmp -328
+acc +42
+jmp -165
+acc -3
+acc +18
+jmp +153
+jmp +1
+acc -10
+acc -7
+jmp -199
+acc +30
+nop -403
+acc -12
+jmp -209
+jmp -242
+acc +38
+nop +33
+acc -10
+acc +22
+jmp -419
+acc -18
+acc +27
+acc +22
+jmp -57
+nop -313
+acc +20
+acc -7
+acc -10
+jmp -371
+jmp -159
+jmp -478
+acc +9
+acc +7
+acc +15
+nop +72
+jmp -358
+jmp -138
+acc -17
+jmp +9
+acc +47
+acc -2
+jmp -221
+nop -331
+nop -297
+acc +12
+acc -13
+jmp +3
+jmp -198
+jmp -150
+acc +17
+jmp -313
+nop -314
+jmp +69
+acc +0
+nop -397
+jmp -104
+jmp -223
+acc -14
+jmp +44
+jmp -61
+acc -7
+acc -18
+jmp -270
+acc -14
+acc +32
+jmp -177
+jmp +84
+acc +6
+nop +14
+jmp +47
+acc +37
+acc -19
+acc -9
+jmp -200
+acc +11
+acc -5
+acc +2
+acc +37
+jmp -488
+nop +19
+jmp -490
+jmp -491
+acc +24
+acc +30
+acc +14
+jmp -19
+jmp -37
+acc +19
+jmp -540
+acc +48
+acc +22
+jmp -434
+jmp -196
+acc +12
+acc -9
+acc +48
+acc -5
+jmp -433
+acc +23
+jmp -245
+acc +43
+jmp -228
+acc +44
+jmp -168
+nop -221
+jmp -102
+jmp +1
+acc +39
+nop -153
+jmp -455
+acc +48
+jmp -75
+jmp +31
+nop -383
+acc -12
+jmp -245
+acc -2
+acc +3
+jmp -421
+acc +38
+jmp -158
+acc +39
+acc -4
+acc -1
+acc +0
+jmp -186
+acc +28
+jmp -247
+jmp +1
+acc -19
+acc +31
+acc +34
+jmp -148
+acc +5
+nop -417
+nop -230
+acc +11
+jmp -162
+jmp +1
+acc +32
+jmp -303
+nop -214
+jmp -332
+acc -10
+acc +33
+jmp -142
+acc +19
+acc +41
+acc +12
+jmp -495
+acc +42
+nop -318
+acc +36
+jmp -524
+jmp +1
+acc +46
+acc -6
+jmp -582
+acc +28
+acc +38
+acc -17
+acc +2
+jmp -432
+acc +35
+nop -550
+acc -6
+jmp -394
+acc +38
+acc +49
+nop -99
+acc +50
+jmp +1
diff --git a/2020/day08/main.go b/2020/day08/main.go
@@ -0,0 +1,80 @@
+package main
+
+import (
+ "bufio"
+ "fmt"
+ "os"
+ "strconv"
+ "strings"
+)
+
+const (
+ NOP = iota
+ ACC
+ JMP
+)
+
+func readInput(filename string) (ops []int, args []int) {
+ file, _ := os.Open(filename)
+ defer file.Close()
+ op_table := map[string]int{
+ "nop": NOP,
+ "acc": ACC,
+ "jmp": JMP,
+ }
+ scanner := bufio.NewScanner(file)
+ for scanner.Scan() {
+ inst := strings.Split(scanner.Text(), " ")
+ ops = append(ops, op_table[inst[0]])
+ arg, _ := strconv.Atoi(inst[1])
+ args = append(args, arg)
+ }
+ return
+}
+
+func main() {
+ ops, args := readInput("./input.txt")
+ // 1179
+ fmt.Println(part1(ops, args))
+ // 1089
+ fmt.Println(part2(ops, args))
+}
+
+func part1(ops []int, args []int) (acc int, fin bool) {
+ exec := make([]bool, len(ops))
+ ip := 0
+ for ip < len(exec) && !exec[ip] {
+ exec[ip] = true
+ switch ops[ip] {
+ case NOP:
+ ip += 1
+ case JMP:
+ ip += args[ip]
+ case ACC:
+ acc += args[ip]
+ ip += 1
+ }
+ }
+ fin = ip >= len(exec)
+ return
+}
+
+func part2(ops []int, args []int) (acc int, fin bool) {
+ for i := 0; i < len(ops); i++ {
+ old_op := ops[i]
+ switch ops[i] {
+ case ACC:
+ continue
+ case JMP:
+ ops[i] = NOP
+ case NOP:
+ ops[i] = JMP
+ }
+ acc, fin = part1(ops, args)
+ ops[i] = old_op
+ if fin {
+ return
+ }
+ }
+ return 0, false
+}