void printPaths(TreeNode* node, std::string currPath) {
    if (node->left!=NULL) printPaths(node->left,currPath + '0');
    if (node->right!=NULL) printPaths(node->right,currPath + '1');

    if (node->left==NULL && node->right==NULL) {
        cout << node->charc.c << '=' << currPath << endl;
    }
}