1 files changed, 5 insertions, 4 deletions
diff --git a/4.py b/4.py
index c75706c..5e60e52 100644
--- a/4.py
+++ b/4.py
@@ -18,12 +18,13 @@ class Board:
     def call(self, num: int) -> None:
         pos: tuple[int, int] | None = self.nums.pop(num, None)
         if pos is None: return
-        self.col_hits[pos[0]] -= 1
-        self.row_hits[pos[1]] -= 1
+        x, y = pos
+        self.col_hits[x] -= 1
+        self.row_hits[y] -= 1
         self.has_bingo = (
             self.has_bingo or
-            not self.col_hits[pos[0]] or
-            not self.row_hits[pos[1]]
+            not self.col_hits[x] or
+            not self.row_hits[y]
         )
     @property
     def unmarked_sum(self) -> int: