sylvainde / aoc2021 Goto Github PK

diff --git a/day3.py b/day3.py
index 4f50594..5fa0b18 100644
--- a/day3.py
+++ b/day3.py
@@ -23,10 +23,13 @@ def get_power_consumption(diagnostic):
 
 def oxygen_rating(diagnostic, i):
     c = collections.Counter(diag[i] for diag in diagnostic)
-    (val1, nb1), (val2, nb2) = c.most_common(2)
-    if nb1 == nb2:
-        return "1"
-    return val1
+    try:
+        (val1, nb1), (val2, nb2) = c.most_common(2)
+        if nb1 == nb2:
+            return "1"
+        return val1
+    except ValueError:
+        return "0"
 
 
 def co2_rating(diagnostic, i):