diff --git a/memory_alloc.rb b/memory_alloc.rb
new file mode 100644
index 0000000..6b92ac3
--- /dev/null
+++ b/memory_alloc.rb
@@ -0,0 +1,22 @@
+input = "5	1	10	0	1	7	13	14	3	12	8	10	7	12	0	6".split("\t").map(&:to_i)
+
+snapshots = []
+res = 0
+while not snapshots.include? input do
+  snapshots << input.dup
+  max_val = input.max
+  idx = input.index max_val
+  input[idx] = 0
+  while max_val > 0 do
+    idx += 1
+    input[idx % input.length] += 1
+    max_val -= 1
+  end
+  res += 1
+end
+puts res
+
+
+cycle_first = snapshots.find_index(input)
+puts cycle_first
+puts res - cycle_first