#include<bits\stdc++.h> 
using namespace std;
struct Node{
	int data;
	Node *next;
};
Node *head,*p,*r;
int x;
int main(){
	cin>>x;
	head=new Node;
	r=head;
	while(x!=-1){
		p=new Node;
		p->data=x;
		p->next=NULL;
		r->next=p;
		r=p;
		cin>>x;
	}
	while(p->next!=NULL)cout<<p->data<<' ';
	return 0;
}