while True: try: nums = input().split(' ') except: break num_node = nums[0] head = nums[1] res = [head] nodes_back = nums[2:-1:2] # print('nodes_back:',nodes_back) nodes_fore = nums[3:-1:2] # print('nodes_fore:',nodes_fore) node_to_del = nums[-1] for node_back,node_fore in zip(nodes_back,nodes_fore)...