Update main.py

I did almost the same as you two but my read functions saves some braces later on.

Author: nylocx

day04/main.py

@@ -1,5 +1,5 @@
 with open("input.txt") as f:
-    lines = [[[int(i) for i in k.split("-")] for k in x.split(",")] for x in f]
+    lines = [[*map(int, x.replace("-", ",").split(","))] for x in f]
 
-print(sum(a <= c <= d <= b or c <= a <= b <= d for (a,b), (c,d) in lines))
-print(sum(a <= d and b >= c for (a,b), (c,d) in lines))
+print(sum(a <= c <= d <= b or c <= a <= b <= d for a, b, c, d in lines))
+print(sum(a <= d and b >= c for a, b, c, d in lines))