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2020 day 8

This commit is contained in:
Luke Hubmayer-Werner 2020-12-14 19:51:14 +10:30
parent e6ab51fdd5
commit 4e82411915
2 changed files with 664 additions and 0 deletions
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70
2020/day08.py Normal file
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with open('input08', 'r') as file:
lines = [(lambda x: (x[0],int(x[1])))(line.strip().split()) for line in file.readlines()]
def f_acc(regs, x):
regs['acc'] += x
regs['ip'] += 1
def f_jmp(regs, x):
regs['ip'] += x
def f_nop(regs, x):
regs['ip'] += 1
fns = {'acc': f_acc, 'jmp': f_jmp, 'nop': f_nop}
inst_swap = {'jmp': 'nop', 'nop': 'jmp', 'acc': 'acc'}
regs = {'ip': 0, 'acc': 0}
executed_ips = set()
while(True):
if regs['ip'] in executed_ips:
print(f'Part 1: {regs["acc"]}')
break
executed_ips.add(regs['ip'])
inst, x = lines[regs['ip']]
fns[inst](regs, x)
# This was an attempt to do a clever backtracking approach to minimize runs. It didn't work properly.
#regs = {'ip': 0, 'acc': 0}
#stacktrace = []
#executed_ips = set()
#flipped_ips = set()
#while True:
#if regs['ip'] in executed_ips:
#while regs['ip'] in flipped_ips:
#regs, executed_ips = stacktrace.pop()
#print(f'loop reached, backtracking to state {regs}')
#inst, x = lines[regs['ip']]
#inst = inst_swap[inst]
#flipped_ips.add(regs['ip'])
#else:
#executed_ips.add(regs['ip'])
#inst, x = lines[regs['ip']]
#stacktrace.append((regs.copy(), executed_ips.copy()))
#fns[inst](regs, x)
#if regs['ip'] >= len(lines):
#print('Program completed successfully!')
#break
# Turns out the problemspace is so low that bruteforce is king anyway
def simulate(flipped_ip):
regs = {'ip': 0, 'acc': 0}
executed_ips = set()
while True:
if regs['ip'] in executed_ips:
return False
executed_ips.add(regs['ip'])
inst, x = lines[regs['ip']]
if regs['ip'] == flipped_ip:
inst = inst_swap[inst]
fns[inst](regs, x)
if regs['ip'] >= len(lines):
return regs['acc']
for i, (inst, x) in enumerate(lines):
if inst != 'acc':
result = simulate(i)
if result:
print(f'Part 2: {result}')
break

594
2020/input08 Normal file
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nop +81
acc -17
jmp +1
acc +31
jmp +211
acc +30
acc -7
jmp +29
acc +16
nop +89
jmp +163
acc -9
acc +40
jmp +189
jmp +111
acc +0
acc +6
jmp +19
acc +6
acc +16
jmp +78
nop +178
jmp +441
acc +27
acc +34
jmp +3
acc +9
jmp +302
acc -4
acc +33
jmp +417
nop +80
acc +34
acc +11
nop +181
jmp -12
jmp +143
jmp +53
jmp +52
jmp +324
acc +0
acc -8
acc +47
jmp +1
jmp +169
acc +23
acc -14
acc -6
acc -13
jmp +267
acc +24
jmp +188
acc +36
jmp +160
acc +14
acc +34
acc -18
jmp +500
jmp +137
jmp +295
acc +11
jmp +393
acc +24
acc +37
nop +258
acc +20
jmp -52
acc +40
jmp +1
jmp +62
acc +34
nop +312
acc +39
nop +431
jmp +386
acc -17
nop +282
acc -8
jmp +490
jmp +148
jmp -1
jmp +201
jmp -54
acc +0
acc +22
jmp +110
nop +443
nop +388
acc +28
jmp +167
nop +48
acc +46
jmp +406
acc +11
acc +17
acc +23
jmp +1
jmp +286
acc +0
acc -15
acc +1
acc +6
jmp +214
acc +39
acc +21
acc +34
jmp +341
jmp +417
jmp +400
jmp -2
jmp +117
acc -10
acc +14
acc +10
acc +10
jmp +339
jmp +162
acc +16
nop +20
acc +12
acc -11
jmp +78
acc +21
acc +12
jmp +181
jmp +404
nop +26
jmp +46
jmp +1
jmp -93
jmp -76
acc -1
nop +30
acc +48
jmp +238
acc +6
nop +244
jmp +36
acc +10
acc +8
acc +19
acc +3
jmp -72
nop +225
jmp +228
acc +44
acc -13
jmp +349
acc -8
acc +45
acc -11
jmp +76
acc +46
jmp +196
acc +4
acc +45
jmp +218
acc +38
jmp -77
acc +10
acc +46
jmp +385
acc +29
jmp +159
jmp +247
jmp +1
acc +26
nop +357
jmp +284
nop +335
acc -18
acc +41
jmp +326
nop +181
jmp +189
nop -135
acc +50
nop +152
jmp -53
acc +0
jmp +1
acc +23
jmp +167
nop +131
acc +18
acc +42
nop +13
jmp +28
jmp +284
acc +10
acc +43
jmp +243
jmp +64
acc +17
jmp +213
acc +0
acc +29
jmp +25
jmp -180
nop +184
jmp +90
jmp -13
jmp +1
jmp -86
jmp +1
acc +20
acc +49
jmp +6
jmp +188
acc +24
acc +0
nop -16
jmp +160
jmp +2
jmp +68
acc +1
acc +30
jmp -52
acc -19
jmp +1
acc -18
jmp +153
acc +0
jmp -92
nop -72
acc +38
jmp +13
jmp +160
acc +24
acc +0
jmp +111
acc -4
acc +45
jmp -215
acc +16
acc +25
acc +28
acc +12
jmp +348
nop +144
jmp -52
acc +41
jmp +1
acc +12
acc +14
jmp +207
jmp +1
acc +26
acc +4
jmp +1
jmp +15
jmp +20
acc +23
acc +41
jmp -8
jmp +284
nop +204
acc +47
acc +35
acc +17
jmp -58
jmp +1
acc +8
nop +72
jmp -210
jmp +324
acc -7
acc +12
acc +48
acc +1
jmp +269
acc -19
acc +18
jmp +167
jmp +1
acc +48
acc +2
jmp +134
jmp +204
jmp +1
acc -1
jmp +191
nop -203
nop +104
acc -16
jmp +261
acc +32
acc +11
acc +37
jmp +74
acc -16
acc -4
acc +10
jmp +101
acc +47
acc +18
jmp +122
acc +42
acc +30
jmp -47
nop -54
acc +38
nop +237
acc +15
jmp -58
acc +50
acc +37
acc +20
jmp -163
nop +49
acc +28
acc +50
acc -13
jmp -305
jmp +66
jmp +92
acc +30
acc +0
jmp -190
nop +153
acc -12
jmp +73
nop -241
acc +25
nop -310
jmp +127
acc +32
acc +6
jmp +55
jmp -250
acc +25
acc -2
acc +42
nop +25
jmp -264
acc +47
acc +47
nop -297
jmp -146
jmp +1
jmp -257
acc +48
acc +49
acc -2
jmp +232
acc +25
acc +9
acc -6
jmp +115
jmp +53
acc +4
acc +19
acc -5
jmp -188
acc +0
acc -16
jmp +132
jmp +189
acc -8
jmp -54
acc -19
nop -338
jmp -322
acc +43
acc +19
acc +1
jmp -238
jmp -111
acc +48
jmp +49
nop -225
jmp +153
jmp +55
jmp -264
acc +27
acc -1
acc -1
acc +7
jmp +208
jmp +68
jmp -218
acc +13
jmp +70
acc +1
jmp +12
acc -7
jmp +129
jmp +1
acc +7
acc +11
acc +2
jmp -377
acc +0
jmp -241
jmp +110
jmp -355
acc -13
jmp +1
jmp -120
nop +83
acc +19
jmp -378
acc +26
jmp +72
acc +9
acc +0
jmp -92
nop -242
jmp -200
acc +29
jmp -374
acc -19
acc +40
acc +9
nop -117
jmp -144
acc +6
jmp +122
acc +7
acc +9
acc +50
jmp -367
acc +18
acc +18
acc +6
nop -212
jmp -19
acc +34
acc -1
jmp +1
jmp -89
acc -19
acc +20
jmp -70
jmp +117
acc +38
acc +23
acc +29
acc +20
jmp -330
acc +30
acc +38
nop -2
jmp +96
acc +11
acc +32
jmp -194
jmp -64
acc +10
acc -2
acc -2
jmp -320
jmp -314
jmp +115
acc -1
acc +38
acc +30
jmp -407
acc +1
jmp -32
jmp +55
acc +50
jmp +84
nop -69
acc +0
nop -270
acc +38
jmp -33
acc +11
acc +32
acc -15
jmp -122
jmp -413
acc -2
jmp -322
acc +49
jmp +1
acc +26
nop -455
jmp -105
acc +26
jmp -6
nop +42
acc +15
jmp -149
acc -7
acc +34
jmp +59
acc -9
acc -11
jmp -122
nop -89
acc +28
acc +34
acc +14
jmp -127
jmp -89
jmp -335
acc +49
acc +0
acc +43
acc +41
jmp -314
jmp -56
acc +11
jmp -443
acc +7
jmp -11
acc +24
acc +16
acc +44
jmp -29
acc +38
acc +8
jmp +50
acc +30
acc +8
acc +14
jmp -160
acc -10
acc +46
acc +2
acc +21
jmp -328
acc +17
acc +23
jmp -374
acc +20
jmp -160
acc +1
acc +30
acc +22
jmp +1
jmp -302
jmp +1
acc +3
acc +19
acc +28
jmp +30
acc +50
acc +23
jmp -244
acc +20
jmp +1
acc +27
jmp -6
jmp -71
acc +28
acc +35
nop -3
jmp -62
nop -386
nop -217
jmp -45
acc +7
acc -11
jmp -104
nop -279
jmp +1
acc -15
acc -17
jmp -478
nop -11
jmp -432
acc -3
acc +12
jmp -558
jmp -513
acc +3
acc +46
jmp -532
acc -14
acc +32
acc -8
acc +25
jmp -521
acc +6
acc +11
acc +40
acc +33
jmp -266
acc +17
acc +11
nop -203
acc +2
jmp -433
acc +38
jmp -476
jmp -125
jmp +1
acc +24
acc -11
jmp +1
jmp +1