Day 14.

14.py

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+#!/usr/bin/python
+
+import re
+from collections import defaultdict
+
+at = 2503
+pattern = re.compile('^(.*) can fly ([0-9]+) .*? for ([0-9]+) seconds, .* for ([0-9]+) seconds.')
+reindeer = {}
+
+with open('14.txt', 'r') as file:
+    for line in file.readlines():
+        name, speed, speed_period, rest_period = pattern.match(line).groups()
+        reindeer[name] = (int(speed), int(speed_period), int(rest_period))
+
+
+def distance_at(reindeer_spec, time):
+    speed, speed_period, rest_period = reindeer_spec
+    cycle_period = speed_period + rest_period
+    return speed * (speed_period * (time // cycle_period) + min(speed_period, time % cycle_period))
+
+print(max(distance_at(v, at) for v in reindeer.values()))
+
+points = defaultdict(int)
+for i in range(at):
+    distances = {r[0]: distance_at(r[1], i + 1) for r in reindeer.iteritems()}
+    for n in [n for n, d in distances.iteritems() if d == max(distances.values())]:
+        points[n] += 1
+
+print(max(points.values()))

14.txt

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+Vixen can fly 19 km/s for 7 seconds, but then must rest for 124 seconds.
+Rudolph can fly 3 km/s for 15 seconds, but then must rest for 28 seconds.
+Donner can fly 19 km/s for 9 seconds, but then must rest for 164 seconds.
+Blitzen can fly 19 km/s for 9 seconds, but then must rest for 158 seconds.
+Comet can fly 13 km/s for 7 seconds, but then must rest for 82 seconds.
+Cupid can fly 25 km/s for 6 seconds, but then must rest for 145 seconds.
+Dasher can fly 14 km/s for 3 seconds, but then must rest for 38 seconds.
+Dancer can fly 3 km/s for 16 seconds, but then must rest for 37 seconds.
+Prancer can fly 25 km/s for 6 seconds, but then must rest for 143 seconds.