Add day02, 2025

Author: snhansen

2025/day02/solution.py

@@ -0,0 +1,33 @@
+with open("input") as f:
+    inp = f.read().strip().split(",")
+
+
+def split_string(s, n):
+    return [s[i:i+n] for i in range(0, len(s), n)]
+
+    
+def is_invalid(s, part1 = True):
+    if len(s) == 1:
+        return False
+    if part1:
+        if len(s) % 2 == 1:
+            return False
+        if len(set(split_string(s, len(s)//2))) == 1:
+            return True
+    else:
+        for i in range(1, len(s)):
+            if len(set(split_string(s, i))) == 1:
+                return True
+    return False
+
+
+ans_pt1, ans_pt2 = 0, 0
+for s in inp:
+    l, r = s.split("-")
+    for x in range(int(l), int(r) + 1):
+        if is_invalid(str(x), part1 = True):
+            ans_pt1 += x
+        if is_invalid(str(x), part1 = False):
+            ans_pt2 += x
+
+print(ans_pt1, ans_pt2)