retyped day2, completed days 3 and 4, modified template

day4/part2.py

@@ -0,0 +1,13 @@
+from common import Range, parse
+
+
+def solve(input: list[tuple[Range, Range]]) -> int:
+    return len(list(filter(lambda x: x[0].overlaps_with(x[1]) or x[1].overlaps_with(x[0]), input)))
+
+
+def main():
+    print(solve(parse("input")))
+
+
+if __name__ == "__main__":
+    main()