diff --git a/players/mcfx/writeup.md b/players/mcfx/writeup.md
index 7e2a961..90e604a 100644
--- a/players/mcfx/writeup.md
+++ b/players/mcfx/writeup.md
@@ -1,5 +1,7 @@
 # Writeup
 
+作者：mcfx
+
 ## 签到
 
 审查元素，step 改成 0.5，然后拖到 1。
@@ -1781,4 +1783,4 @@ r.send(str(m1) + '\n')
 
 while True:
 	open('out.txt', 'ab').write(r.read(1))
-```
\ No newline at end of file
+```