From c55c9cf01bb291cacc903e459df27bc2ba338157 Mon Sep 17 00:00:00 2001
From: Alpha Chen <alpha.chen@gmail.com>
Date: Wed, 16 Dec 2015 21:11:10 -0800
Subject: [PATCH] Day 17.1

---
 ruby/day_17.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ruby/day_17.rb b/ruby/day_17.rb
index b96335d..215b7a4 100644
--- a/ruby/day_17.rb
+++ b/ruby/day_17.rb
@@ -1,5 +1,7 @@
 buckets = DATA.read.split("\n").map(&:to_i)
-puts (1..buckets.size).map {|i| buckets.combination(i).select {|p| p.inject(:+) == 150 }.size }.inject(:+)
+combos = (1..buckets.size).flat_map {|i| buckets.combination(i).select {|p| p.inject(:+) == 150 }}
+min = combos.map(&:size).min
+puts combos.select {|c| c.size == min }.size
 __END__
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