some more days

2022/day4/day4.py

@@ -0,0 +1,45 @@
+
+def contains(first, second):
+    "True if first ⊂ second or second ⊂ first"
+    start_a, end_a = first
+    start_b, end_b = second
+    if start_b >= start_a and end_b <= end_a:
+        return True
+    start_a, end_a = second
+    start_b, end_b = first
+    if start_b >= start_a and end_b <= end_a:
+        return True
+    return False
+
+
+def overlaps(first, second):
+    start_a, end_a = first
+    start_b, end_b = second
+    if start_a <= start_b <= end_a:
+        return True
+    if start_b <= start_a <= end_b:
+        return True
+    return False
+
+
+def main(content):
+    total = 0
+    for l in content:
+        first, second = [tuple(map(int, x.split("-"))) for x in l.split(",")]
+        if contains(first, second):
+            total += 1
+    print("Part 1: ", total)
+
+    total = 0
+    for l in content:
+        first, second = [tuple(map(int, x.split("-"))) for x in l.split(",")]
+        if overlaps(first, second):
+            total += 1
+    print("Part 2: ", total)
+
+
+
+if __name__ == "__main__":
+    import fileinput
+    main([l.rstrip() for l in fileinput.input()])
+