How to code the input format

#1

cannot figure out the input taking of the q

#2

hi @neelrai906 i have fixed your buildTree() function have a look. There are logical errors in your kthlevel function, do a dry run once to figure it out.

node* buildTree(){
    int d,child;
    cin>>d>>child;
    
    node*root=new node(d);
    if (child == 0) {
        return root;
    }
    root->left=buildTree();
    if (child == 2) {
        root->right=buildTree();
    }
    return root;
}
#3

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