diff --git a/day01/part1.min.py b/day01/part1.min.py
index ac87b99..4cfc722 100644
--- a/day01/part1.min.py
+++ b/day01/part1.min.py
@@ -1 +1 @@
-l=[int(x.strip())for x in open("input.txt")];print(sum(l[i]<l[i+1]for i in range(len(l)-1)))
+l=[int(x.strip())for x in open("input.txt")];print(sum(b>a for a,b in zip(l[:-1],l[1:])))
diff --git a/day01/part2.min.py b/day01/part2.min.py
index 70857aa..c08bb22 100644
--- a/day01/part2.min.py
+++ b/day01/part2.min.py
@@ -1 +1 @@
-l=[int(x.strip())for x in open("input.txt")];print(sum(l[i]<l[i+3]for i in range(len(l)-3)))
+l=[int(x.strip())for x in open("input.txt")];print(sum(b>a for a,b in zip(l[:-3],l[3:])))