diff --git a/Development/Mate In One Move/CMakeLists.txt b/Development/Mate In One Move/CMakeLists.txt
index e1ee0f9..2d16080 100644
--- a/Development/Mate In One Move/CMakeLists.txt	
+++ b/Development/Mate In One Move/CMakeLists.txt	
@@ -41,6 +41,7 @@ enable_testing()
 
 find_package( GTest REQUIRED )
 
+# change to target_sources
 set( TEST_SOURCE 
 	src/Solver.cpp
    tests/mate_in_one_move.t.cpp
@@ -57,6 +58,7 @@ target_compile_options( ${TEST_SUITE}
 		-pg
 		-ftest-coverage
 		-fsanitize=address
+		-fno-omit-frame-pointer
 		-fsanitize=undefined
 			-fsanitize=shift
 			-fsanitize=shift-exponent
@@ -74,11 +76,11 @@ target_compile_options( ${TEST_SUITE}
 			-fsanitize=float-cast-overflow 
 			-fsanitize=enum
 			-fsanitize=pointer-overflow
-		-fsanitize-address-use-after-scope
+			-fsanitize-address-use-after-scope
 		-fstack-protector-all
 )
 
-target_link_options(${TEST_SUITE}  
+target_link_options( ${TEST_SUITE}  
 	PRIVATE 
 		-fsanitize=undefined
 		-fsanitize=address
@@ -91,4 +93,4 @@ target_include_directories( ${TEST_SUITE} PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/in
 target_include_directories( ${TEST_SUITE} PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src" )
 
 include( GoogleTest )
-gtest_discover_tests( ${TEST_SUITE} )
\ No newline at end of file
+gtest_discover_tests( ${TEST_SUITE} )
diff --git a/cookieselection.cpp b/cookieselection.cpp
new file mode 100644
index 0000000..d5afbd1
--- /dev/null
+++ b/cookieselection.cpp
@@ -0,0 +1,81 @@
+#include <cassert>
+#include <cstdlib>
+#include <functional>
+#include <iostream>
+#include <string>
+#include <vector>
+#include <queue>
+
+
+
+class Holding_Area final
+{
+public:
+   auto add( int diameter ) -> void;
+   auto request()           -> int;
+
+private:
+   using max_heap = std::priority_queue<int, std::vector<int>, std::less<int>>;
+   using min_heap = std::priority_queue<int, std::vector<int>, std::greater<int>>;
+
+   max_heap max_queue = {};
+   min_heap min_queue = {};
+};
+
+auto
+Holding_Area::add( int diameter ) -> void
+{
+   if ( max_queue.empty() || diameter >= max_queue.top() )
+   {
+      min_queue.push( diameter );
+   }
+   else
+   {
+      max_queue.push( diameter );
+      min_queue.push( max_queue.top() );
+      max_queue.pop();
+   }
+   if ( min_queue.size() > ( max_queue.size() + 1 ) )
+   {
+     max_queue.push( min_queue.top() );
+     min_queue.pop();
+   }
+}
+
+auto
+Holding_Area::request()  -> int
+{
+   assert( min_queue.size() );
+
+   auto cookie = min_queue.top();
+   min_queue.pop();
+
+   if ( max_queue.size() > min_queue.size() )
+   {
+      min_queue.push( max_queue.top() );
+      max_queue.pop();
+   }
+
+   return cookie;
+}
+
+auto
+main() -> int
+{
+   auto holding_area = Holding_Area{};
+
+   for ( std::string input; std::cin >> input; )
+   {
+      if ( input == "#" )        // request
+      {
+         std::cout << holding_area.request() << '\n';
+      }
+      else                       // cookie arrival
+      {
+         int const diameter = std::stoi( input );
+         holding_area.add( diameter );
+      }
+   }
+
+   return EXIT_SUCCESS;
+}