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

typedef struct node{
    int data;
    struct node *next;
}Node;

Node *head = NULL, *tail;

void create(int num){
    Node *newnode = (Node*)malloc(1 * sizeof(Node*));
    newnode->data = num;
    newnode->next =NULL;
    if(head==NULL){
        head = newnode;
        tail = newnode;
    }
    else{
        tail->next = newnode;
        tail = newnode;
    }
}
void display(){
    struct node *itr,n;
    for(itr=head; head!=NULL; itr=itr->next){
        printf("%d",num);
    }
}
int main(){
    int size,num,itr;
    scanf("%d",&size);
    if(size<=0){
        printf("Invalid input");
        return 0;
    }
    for(itr=1; itr<=size; itr++){
        scanf("%d ",&num);
        create(num);
    }
    display();
    return 0;
}