#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;
         }
         for(itr=1;itr<=size;itr++) {
             if(!scanf("%d",&num)) {
                 printf("Invalid input");
                 return 0;
             }
             create(num);
         }
         display();
         return 0;
         
     }
 }