#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=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;
}