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96 lines
2.5 KiB
Python
96 lines
2.5 KiB
Python
6 years ago
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#!/usr/bin/env python3
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import re
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from datetime import datetime, timedelta
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from pprint import pprint
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with open('input.txt', 'r') as f:
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notes_raw = [x.strip() for x in f.readlines()]
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regex = re.compile(r'\[(.*)\] (.*)')
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notes_timestamped = list()
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for note in notes_raw:
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matches = regex.match(note)
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notes_timestamped.append(
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(datetime.strptime(matches[1], "%Y-%m-%d %H:%M"), matches[2])
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)
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notes_timestamped.sort()
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# pprint(notes_timestamped)
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def mark_map(my_map, mode, start, end):
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for i in range(start, end):
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my_map[i] = '.' if mode == 'awake' else '#'
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class Entry:
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def __init__(self, guard_id):
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self.guard_id = guard_id
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self.notes = list()
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self._awake_map = None
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def get_date(self):
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date = self.notes[0][0]
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if date.hour == 23:
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date = date + timedelta(days=1)
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return date.strftime('%m-%d')
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def get_awake_map(self):
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if self._awake_map is not None:
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return self._awake_map
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mode = 'awake'
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awake_map = ['?'] * 60
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start = 0 if self.notes[0][0].hour == 23 else self.notes[0][0].minute
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for note in self.notes[1:]:
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minute = note[0].minute
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mark_map(awake_map, mode, start, minute)
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start = minute
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mode = 'awake' if note[1] == 'wakes up' else 'asleep'
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mark_map(awake_map, mode, start, 60)
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self._awake_map = awake_map
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return awake_map
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def __repr__(self):
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return '{} #{} {}'.format(self.get_date(), self.guard_id.rjust(4), ''.join(self.get_awake_map()))
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regex = re.compile(r'#(\d*)')
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days = list()
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current_entry = None
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for note in notes_timestamped:
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action = note[1]
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matches = regex.search(action)
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if matches:
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current_entry = Entry(matches[1])
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days.append(current_entry)
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current_entry.notes.append(note)
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for day in days:
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print(day)
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# Number of sleep per guard per minute
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sleep_count = dict()
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for day in days:
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awake_map = day.get_awake_map()
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for i in range(0, 60):
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idx = f'{day.guard_id}-{i}'
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if sleep_count.get(idx) is None:
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sleep_count[idx] = 0
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if awake_map[i] == '#':
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sleep_count[idx] += 1
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# pprint(sleep_count)
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sleepy_idx = max(sleep_count, key=sleep_count.get)
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sleepy_guard, sleepy_minute = sleepy_idx.split('-')
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print('Sleepy Guard:', sleepy_guard)
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print('Sleepy Minute:', sleepy_minute)
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res = int(sleepy_guard) * int(sleepy_minute)
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print(f'{sleepy_guard} * {sleepy_minute} = {res}')
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