HackerRank - delete duplicate value nodes - easy question

deleteDuplicateValueNodes

/*
  Remove all duplicate elements from a sorted linked list
  Node is defined as 
  struct Node
  {
     int data;
     struct Node *next;
  }
*/
Node* RemoveDuplicates(Node *head)
{
  // This is a "method-only" submission. 
  // You only need to complete this method. 
    if(head==NULL) return NULL; 
     
    Node* cur = head; 
       
    // 1->1->1->2
    while(cur!=NULL)
    {                              
       Node* copy = cur; 
       int count = 0; 
       if(cur->next != NULL && cur->data == cur->next->data)  
       {
           count++; 
           cur->next = cur->next->next; 
       }
       
       if(count==0)
            cur = cur->next;                   
       
    }
    
    return head;     
}