diff --git a/zeta_python/completed/24435.py b/zeta_python/completed/24435.py
new file mode 100644
index 0000000..91853bb
--- /dev/null
+++ b/zeta_python/completed/24435.py
@@ -0,0 +1,21 @@
+import sys
+import itertools as it
+
+input = sys.stdin.readline
+
+if __name__ == "__main__":
+    T = int(input())
+    for _ in range(T):
+        N = int(input())
+        bob = list(map(str, input().strip()))
+        alice = list(map(str, input().strip()))
+        bob_min = min([int("".join(bob)), int("".join(bob[::-1]))])
+        alice_all = sum(
+            [
+                [int("".join(p)) for p in it.permutations(alice, r)]
+                for r in range(1, len(alice) + 1)
+            ],
+            start=[],
+        )
+
+        print(max(filter(lambda x: x < bob_min, alice_all)))