1 files changed, 18 insertions, 0 deletions
diff --git a/2022/04/a.py b/2022/04/a.py
new file mode 100644
index 0000000..73baa96
--- /dev/null
+++ b/2022/04/a.py
@@ -0,0 +1,18 @@
+points = 0
+
+def contains(ran1, ran2):
+    return ran1.start <= ran2.start and ran1.stop >= ran2.stop
+def overlap(ran1, ran2):
+    return ran1.stop >= ran2.start and ran1.start <= ran2.stop
+
+#with open("example") as f:
+with open("input") as f:
+    lines = f.readlines()
+for line in lines:
+    r1, r2 = line.strip().split(",")
+    r11, r12 = list(map(int, r1.split("-")))
+    r21, r22 = list(map(int, r2.split("-")))
+    ran1, ran2 = range(r11, r12), range(r21, r22)
+    if overlap(ran1, ran2):
+        points += 1
+print(points)