1 files changed, 20 insertions, 0 deletions
diff --git a/2025/11/puzzle-1.awk b/2025/11/puzzle-1.awk
new file mode 100755
index 0000000..2969c24
--- /dev/null
+++ b/2025/11/puzzle-1.awk
@@ -0,0 +1,20 @@
+#!/usr/bin/gawk -f
+
+function npaths(src, dst,    n, i)
+{
+	if (src == dst)
+		return 1;
+	n = 0
+	for (i in paths[src])
+		n += npaths(paths[src][i], dst)
+	return n
+}
+
+BEGIN { FS = ":? " }
+
+{
+	for (i = 2; i <= NF; i++)
+		paths[$1][i - 1] = $i
+}
+
+END { print npaths("you", "out") }