diff --git a/good_title.txt b/good_title.txt
index e4cac9d..ca54ec3 100644
--- a/good_title.txt
+++ b/good_title.txt
@@ -1 +1,2 @@
-Komi-san wa, Komyushou desu.
\ No newline at end of file
+Komi-san wa, Komyushou desu.
+SK∞
\ No newline at end of file
diff --git a/problem_title.txt b/problem_title.txt
index 038e103..bcbfe8f 100644
--- a/problem_title.txt
+++ b/problem_title.txt
@@ -1 +1,2 @@
-Komi-san wa, Komyushou desu
\ No newline at end of file
+Komi-san wa, Komyushou desu
+SK∞
\ No newline at end of file