From 1362f76e60c32a7bf0e7240b01524d16734f8dd4 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Fri, 25 Dec 2020 15:23:39 +0100
Subject: Add day 8

---
 08/a.rb      |  25 +++
 08/b.rb      |  46 +++++
 08/input.txt | 643 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 714 insertions(+)
 create mode 100644 08/a.rb
 create mode 100644 08/b.rb
 create mode 100644 08/input.txt

diff --git a/08/a.rb b/08/a.rb
new file mode 100644
index 0000000..60122eb
--- /dev/null
+++ b/08/a.rb
@@ -0,0 +1,25 @@
+code = []
+
+File.readlines('input.txt').each do |line|
+  instruction, number = line.split
+  code.push [instruction, number.to_i]
+end
+
+visited = {}
+current_line = 0
+acc = 0
+
+while !visited[current_line]
+  visited[current_line] = true
+  case code[current_line][0]
+  when 'nop'
+    current_line += 1
+  when 'acc'
+    acc += code[current_line][1]
+    current_line += 1
+  when 'jmp'
+    current_line += code[current_line][1]
+  end
+end
+
+puts acc
diff --git a/08/b.rb b/08/b.rb
new file mode 100644
index 0000000..ef4fce1
--- /dev/null
+++ b/08/b.rb
@@ -0,0 +1,46 @@
+code = []
+
+File.readlines('input.txt').each do |line|
+  instruction, number = line.split
+  code.push [instruction, number.to_i]
+end
+
+visited = {}
+current_line = 0
+acc = 0
+
+code.size.times do |i|
+  code_copy = code.map {|e| e.slice(0, 2)}
+  case code_copy[i][0]
+  when 'jmp'
+    code_copy[i][0] = 'nop'
+  when 'nop'
+    code_copy[i][0] = 'jmp'
+  end
+
+
+  visited = {}
+  current_line = 0
+  acc = 0
+
+  while !visited[current_line]
+    if current_line == code.size
+      puts acc
+      break
+    elsif current_line > code.size
+      puts 'incorrect run'
+      break
+    end
+
+    visited[current_line] = true
+    case code_copy[current_line][0]
+    when 'nop'
+      current_line += 1
+    when 'acc'
+      acc += code_copy[current_line][1]
+      current_line += 1
+    when 'jmp'
+      current_line += code_copy[current_line][1]
+    end
+  end
+end
diff --git a/08/input.txt b/08/input.txt
new file mode 100644
index 0000000..5288d40
--- /dev/null
+++ b/08/input.txt
@@ -0,0 +1,643 @@
+acc -15
+jmp +164
+nop +157
+acc -12
+acc -19
+acc +41
+jmp +177
+acc +36
+acc +37
+nop +471
+jmp +433
+acc +24
+acc +13
+acc -12
+jmp +556
+jmp +1
+acc -15
+acc +33
+jmp +299
+jmp +344
+acc -3
+jmp +124
+acc +10
+nop +562
+acc +45
+jmp +386
+acc -3
+jmp +206
+acc -19
+acc +12
+jmp +424
+acc -18
+acc +23
+acc +12
+acc +0
+jmp +311
+nop +327
+jmp +301
+acc +20
+nop +375
+jmp +25
+acc -13
+acc +49
+acc +23
+acc -3
+jmp +346
+acc +2
+acc +3
+jmp +123
+acc -7
+nop +183
+jmp +165
+acc +47
+acc +34
+jmp +1
+jmp +359
+acc +12
+acc +16
+acc -3
+acc +0
+jmp +556
+acc +14
+acc -3
+jmp +559
+jmp +192
+jmp +495
+nop +264
+acc +3
+acc +47
+jmp +187
+acc -18
+jmp +1
+acc -12
+jmp -58
+acc +49
+nop +288
+jmp +145
+acc +46
+jmp +294
+acc +38
+nop +400
+jmp +373
+acc +7
+acc +31
+jmp +492
+acc +40
+acc +5
+acc +11
+jmp +263
+acc +29
+acc +10
+acc +21
+acc +14
+jmp +450
+nop +458
+acc +38
+nop +432
+acc +42
+jmp +191
+jmp +279
+nop +71
+acc -17
+jmp -64
+acc +17
+jmp +1
+acc +29
+jmp +506
+jmp +354
+acc +42
+acc +32
+jmp -40
+jmp +184
+acc +41
+acc -7
+acc +10
+acc +38
+jmp +100
+jmp +104
+jmp +245
+jmp +335
+jmp +20
+acc +3
+jmp +490
+jmp -62
+acc +34
+acc +34
+acc -1
+jmp +6
+acc +5
+acc -9
+acc -19
+jmp +397
+jmp +253
+acc +9
+jmp +270
+acc +8
+acc -16
+acc +32
+acc +48
+jmp +258
+acc +4
+acc +37
+nop +319
+jmp +318
+jmp -4
+acc -5
+jmp +32
+nop -86
+jmp +306
+acc -13
+acc +50
+acc -16
+jmp -53
+acc +31
+jmp +52
+acc -11
+jmp +89
+acc +21
+jmp +126
+acc +44
+acc +49
+nop +177
+jmp +44
+acc +8
+jmp +166
+acc +20
+acc -8
+acc +38
+acc +10
+jmp +311
+jmp +21
+acc -10
+nop +84
+acc -7
+acc +13
+jmp +78
+jmp +1
+jmp +366
+acc -6
+acc -12
+jmp -142
+nop +223
+jmp +42
+acc -6
+nop +227
+nop +193
+acc +23
+jmp +83
+acc -10
+acc +12
+jmp +1
+acc -8
+acc +3
+nop +28
+jmp +301
+acc +23
+jmp -170
+nop -79
+acc +21
+acc +37
+jmp +138
+acc +37
+acc +24
+nop +413
+acc -9
+jmp -179
+acc -1
+acc -10
+nop +261
+acc -19
+jmp +168
+acc -16
+acc +19
+acc +17
+acc +21
+jmp -9
+jmp +46
+acc +4
+nop +398
+acc +28
+jmp +396
+acc +11
+jmp +384
+jmp +375
+acc +25
+acc +30
+acc -11
+jmp +371
+jmp +249
+acc -10
+acc -15
+jmp -7
+jmp +38
+acc +29
+acc +15
+acc +46
+jmp -77
+acc +43
+jmp -83
+jmp -42
+acc +30
+acc +44
+acc +33
+acc +14
+jmp +326
+acc -3
+nop +49
+acc +12
+jmp +63
+acc -13
+acc -19
+acc -17
+jmp +126
+jmp +293
+acc +16
+jmp -185
+acc -12
+jmp -92
+acc -13
+acc +19
+acc -1
+jmp -138
+acc +28
+nop -243
+nop +352
+acc +43
+jmp +249
+acc -5
+acc +36
+jmp -217
+nop +197
+nop -106
+acc +30
+jmp +194
+acc +7
+acc -16
+nop +128
+jmp -239
+jmp -258
+acc +11
+nop -74
+acc +42
+acc +40
+jmp +72
+jmp -207
+nop +337
+nop -240
+nop -169
+jmp -55
+nop +165
+acc +27
+acc +4
+jmp -169
+acc -2
+jmp +69
+acc +0
+jmp -250
+acc +11
+acc +45
+acc +31
+jmp +195
+acc -10
+acc -8
+nop -283
+acc -2
+jmp +63
+acc +17
+acc +12
+acc +0
+nop +243
+jmp +190
+acc +17
+acc -18
+jmp +78
+acc +7
+acc +33
+jmp +244
+nop +29
+acc +20
+nop +150
+acc +29
+jmp -43
+acc +45
+nop -132
+acc +16
+acc +14
+jmp -237
+jmp -199
+acc -4
+jmp +179
+acc +13
+acc +15
+acc +6
+acc +46
+jmp -222
+acc -8
+acc +15
+jmp -26
+acc +38
+jmp +1
+nop +266
+jmp +44
+acc -13
+nop +209
+acc +21
+jmp +201
+acc +8
+acc +18
+jmp +190
+acc +35
+jmp -238
+jmp +69
+acc -11
+nop -182
+jmp -221
+acc -16
+acc -5
+acc +7
+jmp +39
+acc +26
+acc +43
+acc +20
+jmp +92
+acc +22
+jmp +81
+acc +32
+acc -13
+jmp +30
+acc +1
+jmp +201
+acc +4
+jmp -165
+acc -17
+jmp -84
+acc -16
+acc +2
+acc +47
+jmp +54
+jmp -195
+acc +33
+acc -17
+jmp -18
+jmp +256
+acc +1
+jmp -244
+acc +28
+acc +35
+jmp +189
+nop +32
+acc +9
+jmp +24
+acc +21
+acc +14
+acc +17
+jmp -67
+acc +21
+jmp -297
+acc +36
+acc +14
+acc -13
+jmp +115
+acc -2
+acc -13
+jmp -182
+nop +119
+acc -4
+acc +44
+acc -14
+jmp +61
+acc +41
+jmp -13
+nop -116
+jmp -294
+jmp +7
+jmp +17
+acc -14
+acc +42
+acc -6
+acc +24
+jmp +151
+nop -374
+nop -375
+acc +4
+jmp -268
+nop -27
+acc +16
+acc +2
+jmp -206
+jmp -320
+nop -196
+jmp +168
+nop +36
+acc +34
+jmp -402
+acc +36
+acc +38
+acc -11
+nop +17
+jmp -182
+acc +15
+jmp -145
+acc +43
+jmp -79
+jmp -391
+jmp -155
+nop -94
+acc +0
+acc +9
+jmp -441
+acc +3
+acc +6
+acc +50
+nop -334
+jmp +163
+acc +18
+acc -11
+jmp +21
+acc +10
+acc +4
+nop +132
+jmp -348
+acc +18
+nop -1
+acc -4
+nop +148
+jmp +165
+jmp +146
+jmp -460
+jmp -14
+acc +26
+nop -388
+nop -353
+jmp +119
+acc +26
+acc -1
+acc +9
+jmp -285
+acc +37
+jmp -345
+jmp -178
+acc +7
+acc +13
+jmp -39
+acc +29
+nop -200
+acc +50
+acc +24
+jmp -160
+acc +18
+jmp +63
+acc -11
+acc +1
+acc -6
+acc +33
+jmp -90
+acc -3
+acc +11
+acc +45
+jmp -197
+jmp -169
+acc +7
+acc -4
+jmp -281
+acc +48
+nop +19
+nop -25
+nop +9
+jmp -274
+nop -126
+acc +22
+acc -4
+jmp -408
+acc +1
+acc +0
+jmp +98
+acc +25
+acc +12
+acc -19
+jmp -90
+acc +44
+acc +20
+acc +21
+jmp -192
+acc -12
+jmp -70
+nop +3
+acc +17
+jmp -349
+acc +20
+acc -7
+acc +6
+nop -43
+jmp +53
+acc +34
+acc +48
+acc -4
+acc +8
+jmp -126
+acc +23
+acc +25
+jmp -349
+acc -4
+jmp -272
+jmp -129
+nop -366
+jmp -292
+acc +29
+nop -269
+acc +50
+nop -254
+jmp -321
+jmp -23
+acc +11
+nop -425
+nop -150
+acc -9
+jmp -467
+acc +18
+acc +27
+jmp -338
+jmp +1
+acc +21
+acc +27
+acc -11
+jmp -160
+acc +27
+acc +15
+acc +0
+acc +41
+jmp -386
+acc -10
+acc +14
+jmp -217
+nop -484
+acc +47
+jmp -529
+acc -10
+acc +48
+acc +0
+jmp -430
+acc +45
+acc -8
+acc +3
+nop -103
+jmp -387
+acc -16
+acc +39
+jmp +1
+acc +17
+jmp -350
+jmp -328
+acc +30
+acc +28
+jmp -309
+nop -361
+acc +1
+nop -468
+jmp -212
+acc +29
+acc -4
+jmp -249
+acc +45
+acc +30
+acc +40
+acc -17
+jmp -579
+acc +25
+jmp -525
+nop -217
+acc +17
+acc +3
+jmp -142
+nop +18
+jmp -493
+jmp +1
+jmp -495
+jmp -360
+acc +7
+acc +30
+acc -3
+nop -449
+jmp -326
+acc -10
+acc -8
+jmp -371
+acc +22
+acc +48
+acc +6
+acc +18
+jmp -59
+acc +17
+acc +14
+jmp -250
+acc +19
+acc +25
+acc -14
+acc -17
+jmp -517
+acc +29
+acc -4
+acc +9
+acc +17
+jmp +1
-- 
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