diff --git "a/lecture_15/\340\244\267\001" "b/lecture_15/\340\244\267\001"
deleted file mode 100644
index e69de29..0000000
diff --git "a/lecture_15/\360&\341\001" "b/lecture_15/\360&\341\001"
deleted file mode 100644
index e69de29..0000000