diff --git a/labs/memory_bound/data_packing/solution.h b/labs/memory_bound/data_packing/solution.h
index 15297e6a..75cc7ebe 100644
--- a/labs/memory_bound/data_packing/solution.h
+++ b/labs/memory_bound/data_packing/solution.h
@@ -11,15 +11,20 @@ constexpr int maxRandom = 100;
 
 // FIXME: this data structure can be reduced in size
 struct S {
-  long long l;
-  double d;
-  int i;
-  short s;
-  bool b;
+  float d;
+  long long l:16; 
+  int i:8;
+  short s:7;
+  bool b:1;
 
   bool operator<(const S &s) const { return this->i < s.i; }
 };
 
+template<int N>
+class TD;
+
+//TD<sizeof(S)> td; 
+
 void init(std::array<S, N> &arr);
 S create_entry(int first_value, int second_value);
 void solution(std::array<S, N> &arr);