Day 6

2023/day6/p1.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+res = 1
+f = File.open('./2023/day6/data')
+times = f.readline.scan(/\d+/).map(&:to_i)
+distances = f.readline.scan(/\d+/).map(&:to_i)
+
+times.each_with_index do |time, i|
+  res *= (0..time).reduce(0) { |acc, j| distances[i] < (time - j) * j ? acc + 1 : acc }
+end
+
+puts res

2023/day6/p2.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+f = File.open('./2023/day6/data')
+time = f.readline.split(':')[1].gsub(' ', '').to_i
+distance = f.readline.split(':')[1].gsub(' ', '').to_i
+puts (0..time).reduce(0) { |acc, j| distance < (time - j) * j ? acc + 1 : acc }