Update lct.md

diff --git a/docs/ds/lct.md b/docs/ds/lct.md
index 3e30334..35c5daa 100644 (file)
--- a/docs/ds/lct.md
+++ b/docs/ds/lct.md
@@ -905,7 +905,7 @@ st.siz2[y] += st.siz[x];
 ??? "参考代码"
 
     ```cpp
-       #include<cstdio>
+    #include<cstdio>
     #include<cstring>
     #include<algorithm>
     using namespace std;