diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -5,27 +5,27 @@
 import bisect
 import itertools
 import functools
+
+
 class Solution:
     def findWinners(self, matches: List[List[int]]) -> List[List[int]]:
-
         winners, losers = defaultdict(int), defaultdict(int)
 
         for match in matches:
-
-            winners[match[0]] += 
-            losers[match[1]] += 
+            winners[match[0]] += 1
+            losers[match[1]] += 1
 
         res_1, res_2 = [], []
 
         for k, v in winners.items():
             if k not in losers:
                 res_1.append(k)
-        
+
         for k, v in losers.items():
             if v == 1:
                 res_2.append(k)
 
         res_1.sort()
         res_2.sort()
-        
-        return [ res_1, res_2 ]
+
+        return [res_1, res_2]
