Solve 2025 day 2 pt 1-2

I tried to solve it without regexp at first, failed
brutally. Cut the line count by 80% using a regexp
instead.

It was also funny to get all square roots.

2025-python/output/day_02.py

@@ -0,0 +1,35 @@
+import re
+
+from output import ints
+
+
+def solve(data):
+    p1 = set()
+    p2 = set()
+    R = re.compile(r"^(\w+)\1+$")
+    for line in data.split(","):
+        a, b = ints(line)
+        for n in range(a, b + 1):
+            s = str(n)
+            ls = len(s)
+            for seq in re.findall(R, s):
+                sqrts = [i for i in range(1, ls + 1) if ls % i == 0]
+                for t in sqrts:
+                    if "".join([seq] * t) == s:
+                        if t == 2:
+                            p1.add(n)
+                        p2.add(n)
+    return sum(p1), sum(p2)
+
+
+if __name__ == "__main__":
+    with open("./input/02.txt", "r") as f:
+        inp = f.read().strip()
+
+    p1, p2 = solve(inp)
+
+    print(p1)
+    print(p2)
+
+    assert p1 == 38437576669
+    assert p2 == 49046150754