#include using namespace std; struct Node { int a; Node* left; Node* right; }; int main() { Node* head = new Node(); head->a = 3; head->left = new Node(); head->right = new Node(); head->left->a = 7; head->right = new Node(); head->right->a = 6; head->right->left = new Node(); head->right->left->a = 2; }
