1 files changed, 37 insertions, 0 deletions
diff --git a/2024/07/python.py b/2024/07/python.py
new file mode 100755
index 0000000..008af39
--- /dev/null
+++ b/2024/07/python.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+from fileinput import input
+
+lines = [line.strip() for line in input()]
+
+
+def solve(w, acc, rest, gold=False):
+    if not rest:
+        return w == acc
+    if w < acc:
+        return False
+    head, *rest = rest
+    return (
+        solve(w, acc + head, rest, gold)
+        or solve(w, acc * head, rest, gold)
+        or (gold and solve(w, int(str(acc) + str(head)), rest, gold))
+    )
+
+
+silver = 0
+gold = 0
+
+for line in lines:
+    want, nums = line.split(":")
+    want = int(want)
+    nums = [int(n) for n in nums.split()]
+    head, *rest = nums
+
+    if solve(want, head, rest):
+        silver += want
+    if solve(want, head, rest, True):
+        gold += want
+
+
+print("silver:", silver)
+print("gold:", gold)