diff --git a/day10/day10.py b/day10/day10.py
index fcf67c1..048d63f 100644
--- a/day10/day10.py
+++ b/day10/day10.py
@@ -16,7 +16,15 @@ def part1():
     print("Part 1 %d " % (diffs[1] * diffs[3]))
 
 
+cache = {
+
+}
+
+
 def count_options(og, adapters):
+    if og in cache:
+        return cache[og]
+
     amount = 0
     adap = list.copy(adapters)
 
@@ -29,6 +37,7 @@ def count_options(og, adapters):
             break
         amount += count_options(num, adap)
 
+    cache[og] = amount
     return amount