Day 1 completed

day1/common.py

@@ -0,0 +1,11 @@
+def parse(filename: str) -> list[list[int]]:
+    elves = []
+    elf = []
+    with open(filename, "r") as f:
+        while line := f.readline():
+            if line == "\n":
+                elves.append(elf)
+                elf = []
+            else:
+                elf.append(int(line[:-1]))
+    return elves