#include "leetcode.h" class Solution { public: bool isSameTree(TreeNode *p, TreeNode *q) { if (p == NULL && q == NULL) return true; if (p == NULL || q == NULL) return false; if (p->val != q->val) return false; return isSameTree(p->right, q->right) && isSameTree(p->left, q->left); } };