Solved Day 14

day14/input

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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.

day14/solution.rb

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+#!/bin/env ruby
+require 'pry'
+
+input = File.readlines('./input')
+
+reindeer = input.to_h do |line|
+  line = line.split
+  [line[0].to_sym,
+   { speed: line[3].to_i, fly_time: line[6].to_i, rest_time: line[13].to_i, flying: line[6].to_i, distance: 0 }]
+end
+
+final_time = 2503
+
+final_time.times do |_tick|
+  reindeer.each do |_deer, stats|
+    stats[:flying] = stats[:fly_time] if stats[:flying] == 0
+    if stats[:flying] > 0
+      stats[:distance] += stats[:speed]
+      stats[:flying] -= 1
+      stats[:flying] = -stats[:rest_time] if stats[:flying] == 0
+    else
+      stats[:flying] += 1
+    end
+  end
+end
+
+winner = reindeer.keys.reduce { |memo, deer| reindeer[deer][:distance] > reindeer[memo][:distance] ? deer : memo }
+
+puts "Part 1: #{winner} wins, flying #{reindeer[winner][:distance]}km."
+
+# Part 2
+reindeer.each_key do |key|
+  reindeer[key][:distance] = 0
+  reindeer[key][:flying] = 0
+  reindeer[key][:points] = 0
+end
+
+final_time.times do |_tick|
+  reindeer.each do |_deer, stats|
+    stats[:flying] = stats[:fly_time] if stats[:flying] == 0
+    if stats[:flying] > 0
+      stats[:distance] += stats[:speed]
+      stats[:flying] -= 1
+      stats[:flying] = -stats[:rest_time] if stats[:flying] == 0
+    else
+      stats[:flying] += 1
+    end
+  end
+  win_dist = reindeer.map { |_, stats| stats[:distance] }.max
+  reindeer.each_key { |deer| reindeer[deer][:points] += 1 if reindeer[deer][:distance] == win_dist }
+end
+
+winner = reindeer.keys.reduce { |memo, deer| reindeer[deer][:points] > reindeer[memo][:points] ? deer : memo }
+puts "Part 2: #{winner} wins, with #{reindeer[winner][:points]} points."
+# binding.pry