#include <stdio.h>
#include <stdlib.h>

struct student
{
    int num;
    struct student *next;
};
struct student *creat(int n){
    struct student *head,*pnew,*ptail;
    int i;
    pnew=(struct student *)malloc(sizeof(struct student));
    scanf("%d",&pnew->num);
    head=ptail=pnew;
    for(i=1;i<n;i++){
        pnew=(struct student *)malloc(sizeof(struct student));
        scanf("%d",&pnew->num);
        ptail->next=pnew;
        ptail=pnew;
    }
    ptail->next=NULL;
    return head;
};
void print(struct student *head){
    struct student *p=head;
    while(p!=NULL){
        printf("%d",p->num);
     p=p->next;
    }
}
int main()
{
    int n,i;
    struct student *head;
    scanf("%d",&n);
    creat(n);
    print(head);
    return 0;
}