diff --git a/day-21/day-21.py b/day-21/day-21.py
index f343a24..6c92b95 100644
--- a/day-21/day-21.py
+++ b/day-21/day-21.py
@@ -16,8 +16,8 @@ def quantum_roll(state, p0, p1, s0, s1):
             for d2 in [1, 2, 3]:
                 new_p0 = (p0 + d0 + d1 + d2) % 10
                 new_s0 = s0 + new_p0 + 1
-                (x1, y1) = quantum_roll(state, p1, new_p0, s1, new_s0)
-                res = (res[0] + y1, res[1] + x1)
+                (w1, w0) = quantum_roll(state, p1, new_p0, s1, new_s0)
+                res = (res[0] + w0, res[1] + w1)
     state[(p0, p1, s0, s1)] = res
     return res