1 files changed, 16 insertions, 0 deletions

diff --git a/2025/11/b.py b/2025/11/b.py
new file mode 100644
index 0000000..8fdcc8b
--- /dev/null
+++ b/2025/11/b.py
@@ -0,0 +1,16 @@
+import fileinput
+from functools import cache
+
+a = {}
+with fileinput.input() as lines:
+        for line in lines:
+                v, l2 = line[:-1].split(': ')
+                a[v] = l2.split(' ')
+
+@cache
+def np(v, d, f):
+        if v == 'out':
+                return 1 if d and f else 0
+        return sum(np(w, d or v == 'dac', f or v == 'fft') for w in a[v])
+
+print(np('svr', False, False))