diff --git a/deathknight.py b/deathknight.py
new file mode 100644
index 0000000..7f162ae
--- /dev/null
+++ b/deathknight.py
@@ -0,0 +1,7 @@
+n = int(input())
+wins = 0
+for _ in range(n):
+    k = input()
+    if "CD" not in k:
+        wins += 1
+print(wins)