#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;
    for(itr=head;itr!=NULL;itr=itr->next){
    printf("%d",itr->data);
}
}
int main(){
    int size,num,itr;
    scanf("%d",&size);
    if(size<=0){
        printf("not found");
        return 0;
    }
    for(itr=1;itr<=size;itr=++){
        scanf("%d",&num);
        create(num);
    }
    display();
    return 0
}