// editor3
#include<stdio.h>
#include<stdlib.h>
struct Node{
    int data;
    struct Node *next;
};

int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    struct Node *head=NULL;
    int value;
    for(int i=0;i<n;i++){
        scanf("%d",&value);
        struct Node *newNode=(struct Node*)malloc(sizeof(struct Node));
        newNode->data=value;
        newNode->data=head;
        head=newnode;
    }
    printf("%d",&n);
    return 0;
}