diff --git a/day03/part1.py b/day03/part1.py
index 2bf1643..d61aeb6 100644
--- a/day03/part1.py
+++ b/day03/part1.py
@@ -1,3 +1,3 @@
 import sys
-c=''.join(["01","10"][sum(c)<len(c)/2]for c in zip(*[[c=="1" for c in l]for l in open(sys.argv[3])]))
-print(int(c[1::2],2)*int(c[0::2],2))
+m=''.join(["01","10"][sum(f=="1"for f in c)<len(c)/2]for c in zip(*open(sys.argv[3])))
+print(int(m[1::2],2)*int(m[0::2],2))