diff --git a/day11/sol.py b/day11/sol.py
index e9a4fdc..52f348c 100644
--- a/day11/sol.py
+++ b/day11/sol.py
@@ -1,4 +1,5 @@
 from collections import Counter, namedtuple
+from copy import deepcopy
 import math
 
 Monkey = namedtuple('Monkey', 'index, op, divisor, target')
@@ -20,14 +21,14 @@ def parse(input):
             int(lines[5].split()[-1]),
             int(lines[4].split()[-1]),
         ]
-        monkeys.append(Monkey(items, op, divisor, target))
+        monkeys.append(Monkey(i, op, divisor, target))
     return monkeys, items
 
 def play(monkeys, items, rounds=1, N=None):
     throws = Counter()
     for _ in range(rounds):
-        for i, m in enumerate(monkeys):
-            for j, x in enumerate(items[i]):
+        for m in monkeys:
+            for x in items[m.index]:
                 if N:
                     nx = m.op(x) % N
                 else:
@@ -35,8 +36,9 @@ def play(monkeys, items, rounds=1, N=None):
                 trg = m.target[nx % m.divisor == 0]
                 #print(f'{i}: {x} -> {nx}. throwing to {trg}')
                 items[trg].append(nx)
-            throws[i] += len(items[i])
-            items[i] = []
+            throws[m.index] += len(items[m.index])
+            items[m.index] = []
+    show(items)
     return throws
 
 def show(items):
@@ -58,14 +60,11 @@ def main():
     #print(monkeys)
     show(items)
 
-    tmp = {i: list(xs) for i, xs in items.items()}
-    throws = play(monkeys, tmp, rounds=20)
-    show(tmp)
+    throws = play(monkeys, deepcopy(items), rounds=20)
     print(monkeybusiness(throws))
 
     N = lcm(m.divisor for m in monkeys)
-    throws = play(monkeys, items, rounds=10000, N=N)
-    show(items)
+    throws = play(monkeys, deepcopy(items), rounds=10000, N=N)
     print(monkeybusiness(throws))
 
 main()