#include<stdio.h>
#include<stdlib.h>
int top=1,str=20;
int arr[size];
int isfull()
{
    if(top==size-1)
        return 1;
    else
        return 0;
}
void push(int num)
{
    if(isfull()
    {
     printf("stack is full");
    }
    else{
        arr[++top]=num;
    }
}
int isempty()
{
    if(top==1)
        return 1;
    else
        return 0;
}
void pop()
{
    if(isempty())
    {
        printf("stack is full");
    }
    else
    {
        top--;
    }
}
void display()
{
    for(int i=0;i<=top,i++){
        printf("%d",arr[i]);}
}
int main()
{
    int num,i;
    scanf("%d",&size);
    if(size=0)
    {
        printf("Invalid input";
        return 0;)
    }
    for(i=1;i<size;i++) {
        scanf("%d",&num);
        printf(&num)
        
    }
    display();
    return 0;
}