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Added day 8

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This commit is contained in:
Chris Josten 2020-12-08 06:38:59 +01:00
parent a321a1a7b4
commit c138d30ea1
Signed by: chris
GPG key ID: 1795A594046530AB
4 changed files with 770 additions and 1 deletions
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3
README.txt
View file

@ -8,7 +8,8 @@ Run "dub".
HOW TO RUN: HOW TO RUN:
./oac-2020 [DAY] [PART] <INPUT_FILE> <DAY_SPECIFIC_ARGUMENTS...> ./oac-2020 [DAY] [PART] <INPUT_FILE> <DAY_SPECIFIC_ARGUMENTS...>
The program reads it input from stdin if INPUT_FILE is not specified or if INPUT_FILE is equal to "-". The program reads it input from $PWD/in/<DAY>.txt if INPUT_FILE is not specified or from stdin
if INPUT_FILE is equal to "-".
BIG BOYS: BIG BOYS:
https://ls-a.xyz/advent/2020/bigboy.html https://ls-a.xyz/advent/2020/bigboy.html

612
in/8.txt Normal file
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@ -0,0 +1,612 @@
acc +18
nop +222
acc -16
acc +28
jmp +475
acc -6
jmp +584
acc -12
acc -8
jmp +554
acc -9
acc +12
acc -16
acc +27
jmp +336
acc -4
jmp +214
acc +38
jmp +61
acc +3
acc +28
acc +5
acc -19
jmp +584
nop +206
jmp +506
acc +36
jmp +133
acc +20
acc +43
acc -18
jmp +409
acc +24
jmp +131
acc -12
acc +7
acc +7
jmp +454
acc +37
acc -6
nop +558
acc +31
jmp +124
acc -15
nop +201
acc -7
jmp +297
acc +3
nop +517
jmp +221
jmp +211
acc +28
acc +35
jmp +5
acc +31
nop +325
acc -15
jmp +116
jmp +1
nop +333
acc -2
acc -5
jmp +138
acc +19
acc +9
jmp +180
acc +18
jmp +228
jmp +495
jmp +382
acc +20
nop +414
nop +139
acc +33
jmp +171
acc -10
jmp +41
acc -2
jmp +80
acc +20
nop +451
acc +2
acc +24
jmp +102
acc +1
acc -11
acc +9
acc +38
jmp -73
acc +17
acc +16
acc +12
acc +43
jmp +168
jmp +286
acc +6
acc +6
jmp +271
acc -17
acc -5
acc +1
jmp -50
acc -9
acc +6
acc -2
acc +33
jmp +385
acc +18
acc +24
jmp +370
acc -5
acc +23
acc +6
jmp +98
acc -10
acc -16
jmp +329
nop +41
jmp +463
nop +224
acc +35
jmp +345
acc +34
acc -18
acc +5
jmp +177
nop -57
nop -80
acc +20
jmp -12
acc +24
acc +39
jmp +363
jmp +253
acc -14
acc +0
acc +22
jmp +118
acc +43
acc -2
jmp +300
acc -14
acc +8
acc +47
jmp +271
jmp +420
acc +33
acc +15
acc +20
acc +25
jmp +84
acc +41
jmp +420
acc +25
jmp +238
jmp +1
acc +14
jmp +415
jmp +68
jmp +262
acc +34
jmp +346
acc +39
jmp +56
jmp +364
jmp -133
acc +13
jmp +1
acc +33
jmp +408
acc +29
acc -4
jmp +319
jmp +106
jmp +228
acc -8
acc +8
acc +22
jmp -146
jmp +223
acc +27
nop +191
acc +49
jmp +331
jmp +39
jmp -170
acc +28
acc -6
acc +50
jmp +268
acc +41
nop +254
acc +28
jmp +269
jmp +140
acc +10
nop +131
acc +3
jmp -40
jmp +373
acc +47
jmp -91
acc -19
jmp +300
acc -2
jmp +1
acc +44
acc -11
jmp +306
acc +33
jmp -15
acc +9
jmp +1
jmp +144
acc +40
nop +184
nop -75
nop +228
jmp +296
acc +22
nop +364
jmp -214
jmp +18
jmp +375
acc +22
jmp -67
acc +8
acc -17
jmp +174
jmp -99
nop -45
acc +7
jmp -213
jmp -218
acc +50
nop +52
nop +98
jmp -142
acc +18
jmp +252
acc +36
jmp -194
acc +1
nop -53
jmp -127
jmp +327
acc +7
acc -9
acc +39
nop -127
jmp +84
jmp -117
nop -29
acc +43
jmp -216
acc +25
acc +16
acc +40
nop +122
jmp +140
jmp +180
acc +42
acc -5
acc -14
jmp -84
jmp -31
acc +37
acc -11
jmp -217
jmp +210
jmp +170
nop +301
jmp +309
acc +6
jmp +135
acc +6
nop -123
acc +17
jmp +315
acc -1
nop -46
nop -58
nop -59
jmp +202
acc +48
acc +38
jmp +86
acc -4
acc +33
acc +28
jmp -50
nop +43
acc +38
acc +13
jmp +33
acc +4
acc +6
jmp -78
acc +22
acc +7
acc -9
jmp -56
acc +30
nop +54
nop -81
nop +198
jmp +252
jmp +1
acc +6
acc -10
acc +29
jmp -242
jmp +1
acc +42
acc +34
acc +22
jmp +231
acc +29
acc -10
jmp -161
acc +37
acc +9
jmp -77
acc -15
acc +32
acc +32
jmp -6
acc +0
nop -124
nop +174
jmp +20
acc +45
acc +24
jmp -13
acc +6
acc -10
acc +23
acc -15
jmp +34
acc +5
acc +38
acc +42
jmp -116
acc +0
acc +8
jmp -243
acc -18
acc +25
acc +1
jmp +158
nop +65
jmp +1
jmp +151
acc +12
acc +12
jmp +1
jmp -305
jmp +29
jmp -263
acc +33
jmp +1
nop +142
jmp +78
acc +41
nop -141
acc -9
acc +5
jmp -245
jmp +41
acc +16
nop -83
jmp -28
nop -149
acc +38
jmp -15
acc +7
nop -329
acc +5
acc +21
jmp -7
acc -19
jmp -38
acc +5
acc +3
acc +10
jmp -181
jmp -240
acc +19
acc +15
acc +31
acc -11
jmp -340
acc +12
acc +46
jmp +127
acc +12
acc +31
acc +30
jmp -158
acc -10
jmp -374
jmp +50
acc +43
nop +42
acc +19
jmp -232
acc -14
acc -4
jmp +95
acc +23
acc +49
acc +31
nop -139
jmp -272
jmp -141
acc +26
acc -8
jmp +173
nop +145
nop +133
jmp +164
acc +7
jmp +23
acc -4
acc +48
jmp -138
acc +4
jmp -389
nop +156
acc +44
acc +40
jmp +146
nop -247
acc +44
jmp +1
acc +28
jmp +95
acc +13
acc +2
jmp -254
acc +24
jmp +122
acc +39
acc +0
jmp -12
jmp -179
nop -44
nop +100
acc -19
nop -47
jmp -107
acc +32
acc +33
acc +42
acc +6
jmp -366
jmp -122
acc +2
nop -443
nop +72
jmp -381
jmp -446
jmp -332
acc -7
acc +45
jmp -355
acc +27
acc -4
acc +3
jmp +96
acc +45
jmp -402
acc +45
acc -3
acc +22
jmp -141
acc +29
acc -1
jmp +29
acc -1
acc -10
jmp -208
acc +6
nop -196
jmp -218
acc -12
acc +49
nop -137
jmp -430
acc +21
jmp -110
nop -287
acc -3
jmp -42
jmp -487
acc -16
acc -1
acc +7
acc +39
jmp -119
jmp +1
acc +9
jmp -23
acc +27
jmp -300
acc +12
jmp -440
acc +2
acc +38
acc +12
jmp -84
acc +25
acc -14
jmp -418
acc -15
acc +48
jmp +1
nop -383
jmp -365
acc +47
jmp -193
acc +23
jmp -235
jmp +1
acc -4
acc +35
nop -64
jmp -87
acc +32
jmp -339
jmp -479
acc -4
acc +32
acc -10
jmp -77
acc +0
acc +47
acc +41
jmp -308
acc -8
acc -9
jmp -229
acc -14
acc +24
nop -380
acc +49
jmp -174
acc -11
nop -69
jmp +3
acc -14
jmp -89
jmp -301
acc +46
acc +8
nop -156
acc +44
jmp +1
jmp +26
acc +17
acc +23
acc +6
jmp -4
jmp -97
jmp -324
acc +2
jmp -27
nop -195
acc +3
acc -13
acc +15
jmp -19
acc +30
nop -318
jmp +19
nop -72
jmp -315
acc +4
nop +6
jmp -384
jmp -505
jmp -512
acc +33
jmp -168
jmp -443
nop -519
acc +7
acc +41
acc +15
jmp -269
nop -539
jmp -416
jmp -326
nop -221
acc +14
jmp -186
acc -1
jmp -295
acc +29
acc +43
nop -436
nop -421
jmp -123
acc +13
acc -11
acc +12
jmp -155
acc +9
acc -16
acc -15
nop -380
jmp +1

2
source/app.d
View file

@ -14,6 +14,7 @@ import day4;
import day5; import day5;
import day6; import day6;
import day7; import day7;
import day8;
import dayutil; import dayutil;
immutable string progName = "aoc-2020"; immutable string progName = "aoc-2020";
@ -26,6 +27,7 @@ Variant function(int, File, bool, string[])[] programs = [
&day5.run, &day5.run,
&day6.run, &day6.run,
&day7.run, &day7.run,
&day8.run,
]; ];
void printUsage(string name) { void printUsage(string name) {

154
source/day8.d Normal file
View file

@ -0,0 +1,154 @@
import std.array;
import std.algorithm;
import std.conv;
import std.range;
import std.stdio;
import std.string;
import std.traits;
import std.variant;
import dayutil;
Variant run(int part, File input, bool bigboy, string[] args) {
Instruction[] instructions = readInput(input.byLine);
Variant result = parts!int(part,
() => part1(instructions),
() => part2(instructions));
return result;
}
enum Memomic {
NOP,
ACC,
JMP
}
struct Instruction {
Memomic memomic;
int arg;
}
Instruction[] readInput(R)(R range) if (isInputRange!R && isSomeString!(ElementType!R)) {
return range.map!((text) {
Instruction instruction;
switch(text[0..3]) {
case "nop":
instruction.memomic = Memomic.NOP;
break;
case "acc":
instruction.memomic = Memomic.ACC;
break;
case "jmp":
instruction.memomic = Memomic.JMP;
break;
default:
writeln("unknown instruction: ", text[0..3]);
break;
}
//int sign = text[4] == '+' ? 1 : -1;
// to!int correctly handles + and -
instruction.arg = to!int(text[4..$]);
return instruction;
}).array;
}
int part1(ref Instruction[] instrs) {
int acc = 0;
int pc = 0;
int[] visited;
while(!visited.canFind(pc)) {
Instruction curInstr = instrs[pc];
writeln(pc, curInstr);
visited ~= [pc];
switch(curInstr.memomic) {
case Memomic.NOP:
pc += 1;
break;
case Memomic.ACC:
pc += 1;
acc += curInstr.arg;
break;
case Memomic.JMP:
pc += curInstr.arg;
break;
default:
break;
}
}
return acc;
}
unittest {
string input = q"EOS
nop +0
acc +1
jmp +4
acc +3
jmp -3
acc -99
acc +1
jmp -4
acc +6
EOS";
auto instrs = readInput(input.lineSplitter);
assert(part1(instrs) == 5);
}
int part2(ref Instruction[] instrs) {
bool finishes(ref Instruction[] instrs, out int acc) {
int pc = 0;
int[] visited;
while(!visited.canFind(pc)) {
Instruction curInstr = instrs[pc];
writeln(pc, curInstr);
visited ~= [pc];
switch(curInstr.memomic) {
case Memomic.NOP:
pc += 1;
break;
case Memomic.ACC:
pc += 1;
acc += curInstr.arg;
break;
case Memomic.JMP:
pc += curInstr.arg;
break;
default:
break;
}
if (pc == instrs.length) return true;
}
return false;
}
int acc;
// O(n^2) go brrr
for(size_t i = 0; i < instrs.length; i++) {
if (instrs[i].memomic == Memomic.ACC) continue;
Instruction[] dup = instrs.dup;
dup[i].memomic = dup[i].memomic == Memomic.NOP ? Memomic.JMP : Memomic.NOP;
if (finishes(dup, acc)) return acc;
}
return -1;
}
unittest {
string input = q"EOS
nop +0
acc +1
jmp +4
acc +3
jmp -3
acc -99
acc +1
jmp -4
acc +6
EOS";
auto instrs = readInput(input.lineSplitter);
assert(part2(instrs) == 8);
}