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anightanight
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added 2018/day07
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‎2018/day07/input.txt‎

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Step P must be finished before step R can begin.
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Step V must be finished before step J can begin.
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Step O must be finished before step K can begin.
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Step S must be finished before step W can begin.
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Step H must be finished before step E can begin.
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Step K must be finished before step Y can begin.
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Step B must be finished before step Z can begin.
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Step N must be finished before step G can begin.
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Step W must be finished before step I can begin.
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Step L must be finished before step Y can begin.
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Step U must be finished before step Q can begin.
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Step R must be finished before step Z can begin.
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Step Z must be finished before step E can begin.
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Step C must be finished before step I can begin.
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Step I must be finished before step Q can begin.
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Step D must be finished before step E can begin.
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Step A must be finished before step J can begin.
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Step G must be finished before step Y can begin.
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Step M must be finished before step T can begin.
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Step E must be finished before step X can begin.
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Step F must be finished before step T can begin.
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Step X must be finished before step J can begin.
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Step Y must be finished before step J can begin.
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Step T must be finished before step Q can begin.
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Step J must be finished before step Q can begin.
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Step E must be finished before step Y can begin.
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Step A must be finished before step T can begin.
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Step P must be finished before step H can begin.
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Step W must be finished before step R can begin.
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Step Y must be finished before step Q can begin.
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Step W must be finished before step M can begin.
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Step O must be finished before step M can begin.
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Step H must be finished before step R can begin.
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Step N must be finished before step L can begin.
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Step V must be finished before step W can begin.
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Step S must be finished before step Q can begin.
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Step D must be finished before step J can begin.
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Step W must be finished before step E can begin.
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Step V must be finished before step Y can begin.
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Step O must be finished before step C can begin.
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Step B must be finished before step T can begin.
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Step W must be finished before step T can begin.
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Step G must be finished before step T can begin.
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Step D must be finished before step T can begin.
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Step P must be finished before step E can begin.
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Step P must be finished before step J can begin.
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Step G must be finished before step E can begin.
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Step Z must be finished before step M can begin.
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Step K must be finished before step T can begin.
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Step H must be finished before step U can begin.
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Step P must be finished before step T can begin.
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Step W must be finished before step A can begin.
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Step A must be finished before step F can begin.
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Step F must be finished before step Y can begin.
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Step H must be finished before step M can begin.
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Step T must be finished before step J can begin.
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Step O must be finished before step S can begin.
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Step P must be finished before step M can begin.
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Step X must be finished before step T can begin.
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Step S must be finished before step J can begin.
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Step H must be finished before step C can begin.
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Step B must be finished before step W can begin.
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Step K must be finished before step N can begin.
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Step E must be finished before step T can begin.
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Step S must be finished before step Y can begin.
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Step C must be finished before step G can begin.
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Step R must be finished before step D can begin.
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Step N must be finished before step U can begin.
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Step O must be finished before step L can begin.
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Step B must be finished before step F can begin.
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Step S must be finished before step F can begin.
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Step X must be finished before step Y can begin.
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Step S must be finished before step D can begin.
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Step R must be finished before step E can begin.
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Step S must be finished before step A can begin.
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Step S must be finished before step X can begin.
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Step A must be finished before step G can begin.
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Step E must be finished before step F can begin.
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Step P must be finished before step A can begin.
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Step A must be finished before step M can begin.
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Step E must be finished before step Q can begin.
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Step H must be finished before step W can begin.
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Step W must be finished before step U can begin.
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Step F must be finished before step Q can begin.
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Step I must be finished before step J can begin.
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Step H must be finished before step G can begin.
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Step I must be finished before step G can begin.
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Step P must be finished before step X can begin.
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Step I must be finished before step D can begin.
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Step R must be finished before step X can begin.
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Step S must be finished before step I can begin.
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Step Y must be finished before step T can begin.
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Step R must be finished before step G can begin.
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Step I must be finished before step X can begin.
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Step B must be finished before step D can begin.
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Step X must be finished before step Q can begin.
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Step F must be finished before step X can begin.
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Step V must be finished before step R can begin.
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Step C must be finished before step J can begin.
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Step L must be finished before step Q can begin.
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Step K must be finished before step B can begin.

‎2018/day07/run.py‎

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#! /usr/bin/env python3
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def load_data(filename):
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with open(filename, 'r') as f:
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for line in f:
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line = line.rstrip('\n')
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yield line[len("Step ")], line[len("Step . must be finished before step ")]
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# Part One
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reqs = list(load_data('input.txt'))
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deps = {}
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for must_be_finished_before, step in reqs:
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if step not in deps:
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deps[step] = set([ must_be_finished_before ])
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else:
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deps[step] |= set([ must_be_finished_before ])
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if must_be_finished_before not in deps:
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deps[must_be_finished_before] = set([])
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steps = ''
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while set(deps.keys()) - set(steps):
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found = set([])
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for k, v in deps.items():
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if k in steps:
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continue
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if v - set(steps):
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continue
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found |= set(k)
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steps += sorted(found)[0]
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print(steps)
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# Part Two
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max_workers = 5
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delay = lambda c: 61 + ord(c) - ord('A')
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in_workers = lambda: set( c for _, c in workers )
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steps = ''
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workers = []
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seconds = 0
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while True:
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# Unload from workers
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for i, (s, c) in enumerate(list(workers)):
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if s == seconds:
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steps += c
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workers.remove( (s, c) )
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# Check if we are done
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if not set(deps.keys()) - set(steps):
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break
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# Find steps we can take
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found = set([])
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for k, v in deps.items():
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if k in steps:
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continue
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if k in in_workers():
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continue
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if v - set(steps):
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continue
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found |= set(k)
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# Load workers as much as we can
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while len(workers) < max_workers and found:
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c = list(found)[0]
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workers.append( (seconds + delay(c), c) )
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found -= set([c])
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seconds += 1
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print(seconds)
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‎README.md‎

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2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
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2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
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2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
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2018 ++ ++ ++ ++ ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
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2018 ++ ++ ++ ++ ++ ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
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2019 ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ -- ++ ++ -- +- ++ +- -
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2020 ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ +- ++ ++ ++ ++ ++ +
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2021 ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ +

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