#include<bits/stdc++.h>

using namespace std;

struct Node { 

	char data;
	Node* lchild;
	Node* rchild;
    
};  
int main() {

	Node *s;
	s->data='0';
	Node *l,*r;
	l=s->lchild;
	l->data='1';
	cout<<l->data;
	return 0;
}