#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() {
    Node *itr;
    for(itr=head;itr!=NULL;itr->next)
    printf("%d",itr->data);
}
int main() {
    int size,itr,num;
    scanf("%d",&size);
    if(size<0) {
        printf("Invalid input");
        return 0;
    }
    for(itr=1;itr<=size;itr++) {
        if(!scanf("%d",&num)) {
            printf("Invalid input");
            return 0;
        }
        display();
        return 0;
    }
}