#include <iostream>
#include <bits/stdc++.h>
using namespace std;
typedef struct node {
	int data;
	struct node *next;
} Node;

void traverseLinkedList(Node *start) {
	while(start) {
		//printf("Node");
		cout << start->data << "->";
		start = start->next;
	}
	cout << "NULL" << endl;
}
int main() {
	Node *start = (Node*) malloc(sizeof(Node));
	Node *a = (Node*) malloc(sizeof(Node));
	Node *b = (Node*) malloc(sizeof(Node));
	start->data = 0;
	a->data = 1;
	b->data = 2;
	start->next = a;
	a->next = b;
	traverseLinkedList(start);
	traverseLinkedList(a);
	traverseLinkedList(b);
	return 0;
}