#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 delete(int pos){
    node *first=head;
    node *second=head->next;
    int cnt=1;
}
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;
            
        }
        create(num);
    }
    display();
    return 0;
}
    
}