p more space than the cells in an array. On most systems these days, a single <span class="code-chonk">int</span> variable in a C++ program takes up 32 bits (or 4 bytes) of memory. So, an array of&nbsp;<em>n</em> integers would take 4<em>n</em> bytes of memory. In a BST of integers, however, each node also keeps track of a <em>left</em> and <em>right</em> child pointer. On most systems these days, a pointer in C++ takes up 64 bits (or 8 bytes) of memory. The total memory for each node in a BST, then, is 4 +