diff --git a/modules/05_pointers_and_references/include/dynamic_memory.hpp b/modules/05_pointers_and_references/include/dynamic_memory.hpp
index 6e7fced..ed861b8 100644
--- a/modules/05_pointers_and_references/include/dynamic_memory.hpp
+++ b/modules/05_pointers_and_references/include/dynamic_memory.hpp
@@ -5,7 +5,7 @@
 namespace pointers {
 
 [[nodiscard]] auto allocate_and_fill(std::size_t count, int value) -> int*;
-void deallocate(int* ptr);
+void deallocate(const int* ptr);
 [[nodiscard]] auto clone_array(const int* source, std::size_t count) -> int*;
 
 }  // namespace pointers
diff --git a/modules/05_pointers_and_references/src/dynamic_memory.cpp b/modules/05_pointers_and_references/src/dynamic_memory.cpp
index ed1e3bb..c3a5cf5 100644
--- a/modules/05_pointers_and_references/src/dynamic_memory.cpp
+++ b/modules/05_pointers_and_references/src/dynamic_memory.cpp
@@ -1,9 +1,23 @@
 #include "dynamic_memory.hpp"
 
+#include <algorithm>
+
 namespace pointers {
 
-auto allocate_and_fill(std::size_t count, int value) -> int* { (void)count; (void)value; return nullptr; }
-void deallocate(int* ptr) { delete[] ptr; }
-auto clone_array(const int* source, std::size_t count) -> int* { (void)source; (void)count; return nullptr; }
+auto allocate_and_fill(const std::size_t count, const int value) -> int* {
+    const auto na = new int[count];
+    std::fill_n(na, count, value);
+    return na;
+}
+
+void deallocate(const int* ptr) {
+    delete[] ptr;
+}
+
+auto clone_array(const int* source, const std::size_t count) -> int* {
+    const auto na = new int[count];
+    std::copy_n(source, count, na);
+    return na;
+}
 
 }  // namespace pointers