diff --git a/05-1-1.py b/05-1-1.py
index 9fc5a96..e68edbb 100644
--- a/05-1-1.py
+++ b/05-1-1.py
@@ -1 +1 @@
-print(sorted(map(lambda x:int(''.join(map(lambda y:'01'[int(y in'BR')],x)),2),open(0)))[-1]//2)
+print(sorted(map(lambda x:int(''.join(map(lambda y:'01'[int(y in'BR')],x)),2),open(0)))[-1]/2)