diff --git a/.DS_Store b/.DS_Store
index 984f6be..85af8d6 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/octree/octree/octree_info.cpp b/octree/octree/octree_info.cpp
index 66f8db3..a558bd7 100644
--- a/octree/octree/octree_info.cpp
+++ b/octree/octree/octree_info.cpp
@@ -3,6 +3,7 @@
 #include "types.h"
 
 #include <cstring>
+#include <iostream>
 
 #ifdef KEY64
 const char OctreeInfo::kMagicStr[16] = "_OCTREE_2.0_";
@@ -159,7 +160,7 @@ int64_t OctreeInfo::ptr_dis(PropType ptype, const int depth) const {
   int i = property_index(ptype);
   int64_t dis = ptr_dis_[i]; //int dis = ptr_dis_[i];
   if (locations(ptype) == -1) {
-    dis += (int64_t) nnum_cum_[depth] * channel(ptype) * size_of(ptype);                              // qq: TODO: dis should be long
+    dis += (int64_t) nnum_cum_[depth] * channel(ptype) * size_of(ptype);                           
     if (dis==0){std::cout << "Warning in OctreeInfo: ptr_dis\n";}
   } else {
     // ignore the input parameter depth
diff --git a/pdbbind/.DS_Store b/pdbbind/.DS_Store
index 159ff1c..92970fb 100644
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diff --git a/pdbbind/data_example/.DS_Store b/pdbbind/data_example/.DS_Store
index e4db186..623bee0 100644
Binary files a/pdbbind/data_example/.DS_Store and b/pdbbind/data_example/.DS_Store differ
diff --git a/tensorflow/.DS_Store b/tensorflow/.DS_Store
index c278a5c..716f99a 100644
Binary files a/tensorflow/.DS_Store and b/tensorflow/.DS_Store differ
diff --git a/tensorflow/script/.DS_Store b/tensorflow/script/.DS_Store
index c888a4a..4769f01 100644
Binary files a/tensorflow/script/.DS_Store and b/tensorflow/script/.DS_Store differ