diff --git a/lab_3/21_and_22/queens.cpp b/lab_3/21_and_22/queens.cpp
index f577398..8823845 100644
--- a/lab_3/21_and_22/queens.cpp
+++ b/lab_3/21_and_22/queens.cpp
@@ -28,6 +28,16 @@ Configuration::Configuration(int m, int n, int number_of_pieces) {
     }
 }
 
+Configuration::~Configuration()
+{
+    delete this->board;
+}
+/*
+Configuration::Configuration(Configuration& t)
+{
+    this->board = t.board;
+}
+*/
 std::vector<Conflict> Configuration::get_conflicts()
 {
     std::vector<Conflict> conflicts;
diff --git a/lab_3/21_and_22/queens.hh b/lab_3/21_and_22/queens.hh
index 8af8c96..fd323fb 100644
--- a/lab_3/21_and_22/queens.hh
+++ b/lab_3/21_and_22/queens.hh
@@ -41,6 +41,18 @@ namespace queens
             Board* board;
 
             Configuration(int m, int n, int number_of_pieces);
+            ~Configuration();
+
+            // I could not get copy constructor and copy assignment operator to work :/
+            //Configuration(Configuration& t);
+            /*
+            
+            Configuration& operator=(const Configuration& rhs)
+            {
+                this->board = rhs.board;
+                return *this;
+            }
+            */
             std::vector<Conflict> get_conflicts();
     };
 
diff --git a/lab_3/21_and_22/test.cpp b/lab_3/21_and_22/test.cpp
index 54c082c..b060e6e 100644
--- a/lab_3/21_and_22/test.cpp
+++ b/lab_3/21_and_22/test.cpp
@@ -1,5 +1,7 @@
+#include <chrono>
 #include "queens.hh"
 #include <iostream>
+#include <fstream>
 
 void print_conflict(queens::Conflict c)
 {
@@ -8,14 +10,16 @@ void print_conflict(queens::Conflict c)
 }
 
 int main()
-{
-    queens::Configuration config = queens::Configuration(8, 8, 10);
-    std::vector<queens::Conflict> conflicts = config.get_conflicts();
-    for (int i=0; i<conflicts.size(); i++)
+{   
+    std::ofstream log;
+    log.open ("time.csv", std::ios::app);
+    for (int k = 0; k<24*24; k++)
     {
-        print_conflict(conflicts[i]);
-
-    }
-
-
+        auto t0 = std::chrono::high_resolution_clock::now();
+        queens::Configuration config = queens::Configuration(24, 24, k);
+        std::vector<queens::Conflict> conflicts = config.get_conflicts();
+        auto t1 = std::chrono::high_resolution_clock::now();
+        log << 1.0e-06 * std::chrono::duration_cast<std::chrono::microseconds>(t1-t0).count() << "\n";
+    } 
+    log.close();
 }
\ No newline at end of file