diff --git a/.clang-format b/.clang-format
index cec3f71..abf7494 100644
--- a/.clang-format
+++ b/.clang-format
@@ -5,4 +5,4 @@ DerivePointerAlignment: false
 
 # Default for clang-8, changed in later clangs. Set explicitly for forwards
 # compatibility for students with modern clangs
-IncludeBlocks: Preserve
+# IncludeBlocks: Preserve
diff --git a/daily/May17.cpp b/daily/May17.cpp
index 1dd3690..baf7e4c 100644
--- a/daily/May17.cpp
+++ b/daily/May17.cpp
@@ -1,5 +1,6 @@
-#include <bits/stdc++.h>
+#include <algorithm>
 #include <unordered_map>
+#include <vector>
 using namespace std;
 
 class Solution {