diff --git a/undeadoralive.py b/undeadoralive.py
new file mode 100644
index 0000000..2a49eb1
--- /dev/null
+++ b/undeadoralive.py
@@ -0,0 +1,9 @@
+text = input().strip()
+if ":(" in text and ":)" in text:
+    print("double agent")
+elif ":)" in text:
+    print("alive")
+elif ":(" in text:
+    print("undead")
+else:
+    print("machine")