// editor3
#include<stdio.h>
#include<stdlib.h>
struct Node{
int data;
struct Node* prev;
struct Node* next;
};
struct Node* createNode(int value) {
    struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
    newNode->data = value;
    newNode->prev = NULL;
    newNode->next = NULL;
    return newNode;
}

void insertEnd(struct Node** head, int value) {
    struct Node* newNode = createNode(value);
    if (*head == NULL) {
        *head = newNode;
        return;
    }
    struct Node* temp = *head;
    while (temp->next != NULL) {
        temp = temp->next;
    }
    temp->next = newNode;
    newNode->prev = temp;
}

void printList(struct Node* head) {
    struct Node* temp = head;
    while (temp != NULL) {
        printf("%d", temp->data);
        if (temp->next != NULL) {
            printf(" ");
        }
        temp = temp->next;
    }
}

int main() {
    int n, value;

    if (scanf("%d", &n) != 1 || n <= 0) {
        printf("Invalid input");
        return 0;
    }

    struct Node* head = NULL;

    for (int i = 0; i < n; i++) {
        if (scanf("%d", &value) != 1) {
            printf("Invalid input");
            return 0;
        }
        insertEnd(&head, value);
    }

    printList(head);

    return 0;
}
nvalid input");
            return 0;
        }