1 files changed, 7 insertions, 0 deletions
diff --git a/progs/a578.py b/progs/a578.py
new file mode 100644
index 0000000..f8802cf
--- /dev/null
+++ b/progs/a578.py
@@ -0,0 +1,7 @@
+def decode_list(alist):
+    def aux(g):
+        if isinstance(g, list):
+            return [(g[1], range(g[0]))]
+        else:
+            return [(g, [0])]
+    return [x for g in alist for x, R in aux(g) for i in R]
+\ No newline at end of file