// editor3
#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
typedef struct node{
    int data;
    struct node*next;
}node;
node *head=NULL,*tail;
void create(int num){
    node *newnode=malloc(1*sizeof(node));
    newnode->data=num;
    newnode->next=NULL;
    if(head==NULL){
        head=newnode;
        tail=newnode;
    }
    else{
        tail->next=newnode;
        tail=newnode;
    }
}
int main(){
    int n,num;
    scanf("%d",&n)
    if(n<0){
        printf("Invalid Input");
        retur 0;
    }
    for(i=0;i<n;i++){
        scanf("%d",&num)
        create(num);
    }
    printf("%d",n);
    return 0;
}