AOC 2019 solutions

About

This repo contains solutions to the advent of code 2019 edition.

Now requires Python >= 3.8!

How to use

The files under the days directory are most conveniently run as python modules:

python3 -m days.d01p1 <input file>

The input directory is conveniently included to store your personal input and test files.

utils.parse

This utility module provides code with a uniform way to get input, including argument parsing.

That is, it provides an optional argument for specifying an input file. If this argument is not specified, input is read from stdin.

from utils.parse import Parser

# mimics the cat utility
parser = Parser(desc="Optional assignment description")
with parser.input as input:
    stripped = (l.strip() for l in input)
    print(*stripped, sep='\n')

misc.disic

Intcode

In this edition some tasks operate on a special Intcode language.

This module prettifies an Intcode program by adding named operations, visual address modes and opcode positions.

Example

For a comma-separated Intcode (wrapping added for readability):

3,52,
1001,52,-5,52,
3,53,
1,52,56,54,
1007,54,5,55,
1005,55,26,
1001,54,-5,54,
1105,1,12,
1,53,54,53,
1008,54,0,55,
1001,55,1,55,
2,53,55,53,
4,53,
1001,56,-1,56,
1005,56,6,
99,
0,
0,
0,
0,
10

python3 -m misc.disic <input file> outputs:

00000000: INP 52
00000002: ADD 52 #-5 52
00000006: INP 53
00000008: ADD 52 56 54
00000012: TLT 54 #5 55
00000016: JNZ 55 #26
00000019: ADD 54 #-5 54
00000023: JNZ #1 #12
00000026: ADD 53 54 53
00000030: TEQ 54 #0 55
00000034: ADD 55 #1 55
00000038: MUL 53 55 53
00000042: OUT 53
00000044: ADD 56 #-1 56
00000048: JNZ 56 #6
00000051: HLT
00000052: ??? (0)
00000053: ??? (0)
00000054: ??? (0)
00000055: ??? (0)
00000056: ??? (10)